Log in

Relevant bibliographies by topics / Bidentate ligand / Journal articles

To see the other types of publications on this topic, follow the link: Bidentate ligand.

Journal articles on the topic 'Bidentate ligand'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Bidentate ligand.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Oszwałdowski, Sławomir, Katarzyna Zawistowska-Gibuła, and Kenneth Roberts. "Characterization of CdSe quantum dots with bidentate ligands by capillary electrophoresis." Open Chemistry 9, no. 4 (2011): 572–84. http://dx.doi.org/10.2478/s11532-011-0037-3.

Full text

Abstract:

AbstractThe CdSe quantum dots (QDs) with bidentate ligands: a-diimine (NN) and dihydrolipoic acid (DHLA) were synthesized and characterized by UV-Vis, particle size and capillary electrophoretic techniques. Two systems were analyzed: CdSe with one ligand (CdSe/ligand) and CdSe with two different ligands (CdSe//ligand1/ligand2), where ligand = α-diimine or DHLA. Hydrodynamic features of functionalized QDs were characterized by zone capillary electrophoretic (CZE), and particle size techniques and these methods were consistent. It was established that CZE, micellar (MEKC) and microemulsion (MEEK

APA, Harvard, Vancouver, ISO, and other styles

2

Chan, Chung Ying, and Peter J. Barnard. "Rhenium complexes of bidentate, bis-bidentate and tridentate N-heterocyclic carbene ligands." Dalton Transactions 44, no. 44 (2015): 19126–40. http://dx.doi.org/10.1039/c5dt03295d.

Full text

Abstract:

Rhenium(i) tricarbonyl complexes of a range of bidentate, bis-bidentate and tridentate NHC ligands have been prepared. These NHC ligands are of interest for possible applications in the development of Tc-99m or Re-186/188 radiopharmaceuticals and the stability of two complexes were evaluated in ligand challenge experiments using the metal binding amino acids l-histidine or l-cysteine.

APA, Harvard, Vancouver, ISO, and other styles

3

Gopal, Meera, and Sreesha Sasi. "Synthesis and Structural Characterization of Lanthanum(III) Complexes of 4-Nitrosoantipyrine." Asian Journal of Chemistry 33, no. 3 (2021): 617–21. http://dx.doi.org/10.14233/ajchem.2021.23047.

Full text

Abstract:

A new series of La(III) complexes of the ligand with the general formula [La(L)2(a)3] and [La2(L)4(aa)3], (a = nitrate (1), thiocyanate (2), acetate (3) and propionate (4) ions, aa = sulphate (5), thiosulphate (6), oxalate (7) and malonate (8) ions with the ligand 4-nitrosoantipyrine (L) were synthesized and characterized using various physico-chemical studies. The primary ligand L acts as a bidentate ligand utilizing the carbonyl group and the nitroso group for bonding. The nitrate, thiocyanate, acetate and propionate ions are monovalent unidentate ligands, whereas sulphate, thiosulphate, oxa

APA, Harvard, Vancouver, ISO, and other styles

4

Zhou, Wen, and Jian Wang. "A one-dimensional zinc(II) coordination polymer incorporating [1,1′-biphenyl]-4,4′-dicarboxylate andN,N′-bis(pyridin-3-ylmethyl)-[1,1′-biphenyl]-4,4′-dicarboxamide ligands." Acta Crystallographica Section C Crystal Structure Communications 69, no. 5 (2013): 486–90. http://dx.doi.org/10.1107/s0108270113008111.

Full text

Abstract:

In the title compound,catena-poly[[[N,N′-bis(pyridin-3-ylmethyl)-[1,1′-biphenyl]-4,4′-dicarboxamide]chloridozinc(II)]-μ-[1,1′-biphenyl]-4,4′-dicarboxylato-[[N,N′-bis(pyridin-3-ylmethyl)-[1,1′-biphenyl]-4,4′-dicarboxamide]chloridozinc(II)]-μ-[N,N′-bis(pyridin-3-ylmethyl)-[1,1′-biphenyl]-4,4′-dicarboxamide]], [Zn2(C14H8O4)Cl2(C26H22N4O2)3]n, the ZnIIcentre is four-coordinate and approximately tetrahedral, bonding to one carboxylate O atom from a bidentate bridging dianionic [1,1′-biphenyl]-4,4′-dicarboxylate ligand, to two pyridine N atoms from twoN,N′-bis(pyridin-3-ylmethyl)-[1,1′-biphenyl]-4,4

APA, Harvard, Vancouver, ISO, and other styles

5

Liu, Liang, Hui Chen, Zhenqiang Yang, Junnian Wei, and Zhenfeng Xi. "C,C- and C,N-Chelated Organocopper Compounds." Molecules 26, no. 19 (2021): 5806. http://dx.doi.org/10.3390/molecules26195806.

Full text

Abstract:

Copper-catalyzed and organocopper-involved reactions are of great significance in organic synthesis. To have a deep understanding of the reaction mechanisms, the structural characterizations of organocopper intermediates become indispensable. Meanwhile, the structure-function relationship of organocopper compounds could advance the rational design and development of new Cu-based reactions and organocopper reagents. Compared to the mono-carbonic ligand, the C,N- and C,C-bidentate ligands better stabilize unstable organocopper compounds. Bidentate ligands can chelate to the same copper atom via

APA, Harvard, Vancouver, ISO, and other styles

6

Emad N. Al_Sabawi, Ahmed S. Al-Janabi, and Hayfa Muhammed Jerjes. "Synthesis and Spectroscopic study of Pd(II)- Salicylaldoxime complexes with amine ligands." Tikrit Journal of Pure Science 26, no. 3 (2022): 26–34. http://dx.doi.org/10.25130/tjps.v26i3.140.

Full text

Abstract:

New Pd(II) complexes of Salicylaldoxime (HSaly) with amine ligands {amine = Bipy, Phen and en} were synthesized and characterized by using CHN analysis, FT-IR spectra, molar conductivity and 1H NMR spectra. The HSaly ligand was coordinated with the Pd(II) ion as bidentate chelating ligand in complex [Pd(Saly)2], through oxygen atom of hydroxylate group and nitrogen atom of oxime group, whereas, bonded as monodentate ligand in complexes [Pd(Saly)2(amine)] (2-4), via the oxygen atom of hydroxylate group, and the amines were coordinated as bidentate chelate via N atom to give a square planner aro

APA, Harvard, Vancouver, ISO, and other styles

7

Sárosi, Imola, Menyhárt B. Sárosi, Peter Lönnecke, Luminiţa Silaghi-Dumitrescu, and Evamarie Hey-Hawkins. "Heterotopic As,S,P and As,S,As Ligands: Synthesis and Theoretical Studies." Australian Journal of Chemistry 66, no. 10 (2013): 1246. http://dx.doi.org/10.1071/ch13262.

Full text

Abstract:

The heterotopic As,S,P ligands 1-AsPh2-2-StBu-3-PPh2-C6H3 (2) and 1-AsPh2-2-SH-3-PPh2-C6H3 (4) and dinucleating As,S,As ligand 1,3-(AsPh2)2-2-StBu-C6H3 (3) have been synthesized and characterized. The structural motif of these compounds suggests great potential for their use as monodentate, bidentate chelating, bidentate bridging, and tridentate ligands.

APA, Harvard, Vancouver, ISO, and other styles

8

Muth, Andreas, Gunther Reinhard, Gottfried Huttner, Thomas Seitz, Thomas Klein, and Laszlo Zsolnai. "Tripod-Liganden mit zwei verschiedenen Donorgruppen: Synthese und Koordinationsverhalten von H3CCH(CH2PPh2)2(CH2OH) / Tripod Ligands with Two Different Donor Groups: Synthesis and Coordination of H3CC(CH2PPh2)2(CH2OH)." Zeitschrift für Naturforschung B 49, no. 7 (1994): 889–97. http://dx.doi.org/10.1515/znb-1994-0706.

Full text

Abstract:

Abstract Starting from pentaglycerin, H3CC(CH2OH)3, a convenient three step synthesis of the tripod ligand H3CC(CH2PPh2)2(CH2OH) (3) (abbreviated as PPO(H)) is described and its structure is established by the usual analytical methods as well as by X-ray analysis. The ligand behaves as a bidentate donor towards nickel(II) as shown by the formation and X-ray analysis of the complex {PPO(H)}NiBr2 (4). In the square planar complex 4 only the PPh2 groups are coordinated. In the tetrahedral complex [{PPO(H)}2Ni](BF4)2 (5) two PPO(H) ligands surround nickel as bidentate ligands.

APA, Harvard, Vancouver, ISO, and other styles

9

Alghamdi, Israa A., Mohamed Abdelbaset, and Ines El Mannoubi. "Mixed Ligand Complexes of Copper(II) and Cobalt(II) with Hydrazones Derivatives and ortho-Vanillin: Syntheses, Characterizations and Antimicrobial Activity." Oriental Journal of Chemistry 35, no. 6 (2019): 1722–30. http://dx.doi.org/10.13005/ojc/350614.

Full text

Abstract:

The purpose of this paper was to synthesis new mixed-ligand Cu(II) and Co(II) metal complexes utilizing bidentate and tridentate donor hydrazones derivatives as primary ligands and o-vanillin as co-ligand. The obtained compounds were characterized by elemental analysis, Infrared, UV-Vis., 1H-NMR, Mass spectra, molar conductance, thermal analysis and atomic absorption spectroscopy (ASS). Spectroscopic analysis results indicated that the hydrazone ligand (L1) behave as tridentate (ONO) and forms metal complexes having distorted square planar geometry. While the ligands (L2, L3 AND L4) behave as

APA, Harvard, Vancouver, ISO, and other styles

10

Ahmed S. M. Al-Janabi. "Synthesis, characterization and study of mercury(II) complexes with phosphine and heterocyclic thiones." Tikrit Journal of Pure Science 20, no. 4 (2023): 67–72. http://dx.doi.org/10.25130/tjps.v20i4.1215.

Full text

Abstract:

Many new mixed ligand complexes of mercury(II) have been synthesized with LH = 4,5-(diphenyl)-1,2,4-triazole-3-thione (diptSH) and tertiary phosphines as co-ligands. The compounds have been characterized by elemental analyses, IR, UV–Vis, molar conductivity, and NMR spectroscopy. In the binuclear complexes (2-5), both Hg atoms have tetrahedral geometry, the Hg atom bonded to three halide ions and one thione ligand (LH) through the sulfur atom. The complex (6) show that thiolate ligand(diptS-) is coordinated as monodentate through the sulfur atom. The dppm behave as bidentate bridging ligand to

APA, Harvard, Vancouver, ISO, and other styles

11

Mulyana, Yanyan, Kerwyn G. Alley, Kristian M. Davies, et al. "Dinuclear cobalt(ii) and cobalt(iii) complexes of bis-bidentate napthoquinone ligands." Dalton Trans. 43, no. 6 (2014): 2499–511. http://dx.doi.org/10.1039/c3dt52811a.

Full text

Abstract:

Seven dinuclear cobalt complexes with bridging bis-bidentate naphthoquinone ligands reveal the steric influence of the ancillary capping ligand on the redox potential of the cobalt centres, with metal-catalysed derivatisation of the bridging ligand also observed.

APA, Harvard, Vancouver, ISO, and other styles

12

García-López, Víctor, João C. Waerenborgh, Bruno J. C. Vieira, Miguel Clemente-León, and Eugenio Coronado. "Iron(ii) complexes of tris(2-pyridylmethyl)amine (TPMA) and neutral bidentate ligands showing thermal- and photo-induced spin crossover." Dalton Transactions 47, no. 27 (2018): 9156–63. http://dx.doi.org/10.1039/c8dt01425f.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Bessel, Carol A., Joseph A. Margarucci, J. Henry Acquaye, et al. "Steric ligand effects of six bidentate bipyridyl ligands." Inorganic Chemistry 32, no. 25 (1993): 5779–84. http://dx.doi.org/10.1021/ic00077a021.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Ge, Guo-Ping, та Chun-Yan Li. "(Acetylacetonato-κ2O,O′)bis{5-fluoro-2-[3-(4-fluorophenyl)pyrazin-2-yl]phenyl-κ2N1,C1}iridium(III)". Acta Crystallographica Section E Structure Reports Online 68, № 8 (2012): m1079. http://dx.doi.org/10.1107/s1600536812031546.

Full text

Abstract:

In the title complex, [Ir(C16H9F2N2)2(C5H7O2)], the IrIIIatom, lying on a twofold rotation axis, is hexacoordinated in a distorted octahedral geometry by twoC,N-bidentate 5-fluoro-2-[3-(4-fluorophenyl)pyrazin-2-yl]phenyl ligands and oneO,O′-bidentate acetylacetonate ligand. The dihedral angles between the benzene rings and the pyrazine ring are 14.66 (8) and 49.76 (12)°.

APA, Harvard, Vancouver, ISO, and other styles

15

Xuan, Xiao-peng, Pei-zheng Zhao та Shu-xia Zhang. "(2,9-Dimethyl-1,10-phenanthroline-κ2 N,N′)bis(3-hydroxybenzoato-κ2 O,O′)manganese(II) 2,9-dimethyl-1,10-phenanthroline dihydrate". Acta Crystallographica Section E Structure Reports Online 63, № 11 (2007): m2813—m2814. http://dx.doi.org/10.1107/s1600536807051628.

Full text

Abstract:

In the title compound, [Mn(C7H5O3)2(C14H12N2)]·C14H12N2·2H2O, the MnII ion is coordinated by a bidentate 2,9-dimethyl-1,10-phenanthroline (dmphen) ligand and two bidentate 3-hydroxybenzoate anions in a distorted octahedral environment. The structure is stabilized by O—H...O and O—H...N hydrogen bonds involving water molecules, the 3-hydroxybenzoate ligands and the uncoordinated dmphen molecules to form a three-dimensional network.

APA, Harvard, Vancouver, ISO, and other styles

16

Al Mamari, Hamad H., and Yousuf Al Lawati. "Investigations into the ligand steric and electronic effects of Ru-catalyzed C–H bond arylation directed by 8-aminoquinoline as a bidentate-directing group." Journal of Chemical Research 44, no. 11-12 (2020): 705–9. http://dx.doi.org/10.1177/1747519820920154.

Full text

Abstract:

In this study, we report an investigation into the steric (cone angle, θ) and electronic properties of ligands in Ru-catalyzed C–H arylation of aromatic benzamides bearing 8-aminoquinoline as an N,N’-bidentate-directing group. The study employs [RuCl2( p-cymene)]2 as a precatalyst, and a ligand, under study, as a cocatalyst. Various electronically and sterically different monodentate and bidentate phosphine ligands were examined. Other ligands such as phosphites and amines were also tested. The study reveals that while bidentate phosphines, phosphites, and aryl and alkyl amines were found to b

APA, Harvard, Vancouver, ISO, and other styles

17

Liu, Fang, Jing-Jing Zhang, Ming-Yuan Lei та Qing-Fu Zhang. "A two-dimensional cadmium(II) coordination polymer based on 5-(pyridin-4-yl)isophthalic acid: poly[[tetraaquabis[μ3-5-(pyridin-4-yl)isophthalato]dicadmium(II)] pentahydrate]". Acta Crystallographica Section C Structural Chemistry 71, № 9 (2015): 834–38. http://dx.doi.org/10.1107/s2053229615015612.

Full text

Abstract:

The title CdIIcompound, {[Cd2(C13H7NO4)2(H2O)4]·5H2O}n, was synthesized by the hydrothermal reaction of Cd(NO3)2·4H2O and 5-(pyridin-4-yl)isophthalic acid (H2L). The asymmetric unit contains two crystallographically independent CdIIcations, two deprotonatedL2−ligands, four coordinated water molecules and five isolated water molecules. One of the CdIIcations adopts a six-coordinate octahedral coordination geometry involving three O atoms from one bidentate chelating and one monodentate carboxylate group of two differentL2−ligands, one N atom of anotherL2−ligand and two coordinated water molecul

APA, Harvard, Vancouver, ISO, and other styles

18

Zhuo, Xin, Zuo-Wei Wang, Yi-Zhi Li та He-Gen Zheng. "Poly[[(2,2′-bipyridine-κ2 N:N′)cadmium(II)]-μ3-5-hydroxyisophthalato-κ4 O,O′:O′′:O′′′]". Acta Crystallographica Section E Structure Reports Online 62, № 4 (2006): m785—m787. http://dx.doi.org/10.1107/s1600536806009032.

Full text

Abstract:

In the molecule of the title compound, [Cd(C8H4O5)(C10H8N2)] n , the Cd atom is coordinated by two N and four O atoms of 2,2′-bipyridine and hydroxyisophthalate ligands, respectively, in a highly distorted octahedral geometry. 5-Hydroxyisophthalate acts as a tetradentate ligand, with one carboxylate group bidentate to one Cd atom and the other carboxylate group bidentate to two further Cd atoms, resulting in the formation of two-dimensional sheets.

APA, Harvard, Vancouver, ISO, and other styles

19

Chen, Chien-An, Liang-Ying Chiang та Han-Mou Gau. "Dichlorido(N,N′-dibenzylideneethane-1,2-diamine-κ2 N,N′)[(2,2-dimethyl-1,3-dioxolane-4,5-diyl)bis(diphenylmethanolato)-κ2 O,O′]titanium(IV)". Acta Crystallographica Section E Structure Reports Online 63, № 11 (2007): m2842—m2843. http://dx.doi.org/10.1107/s1600536807052725.

Full text

Abstract:

The title compound, [TiCl2(C31H28O4)(C16H16N2)], is a titanium(IV) complex of the bidentate 2,2-dimethyl-α,α,α′,α′-tetraphenyl-1,3-dioxolane-4,5-dimethanolate (TADDOLate) ligand containing also two chloride ions and a bidentate neutral N,N′-dibenzylideneethane-1,2-diamine ligand. The molecular structure has a distorted octahedral geometry around the titanium metal center. The Ti—N bond lengths of 2.246 (2) and 2.2476 (17) Å are long, indicating weak bonding between the titanium(IV) metal center and the imine N atoms. Though the two chloride ligands are trans to each other, they bend away from

APA, Harvard, Vancouver, ISO, and other styles

20

Pawar, Gajanan Manohar, Klaus Wurst, Dongren Wang та Michael Buchmeiser. "[μ-3,3′-Diisopropyl-1,1′-(propane-1,3-diyl)bis(1,3-diazinan-2-ylidene)]bis[bromido(η4-cycloocta-1,5-diene)rhodium(I)]". Acta Crystallographica Section E Structure Reports Online 70, № 2 (2014): m71—m72. http://dx.doi.org/10.1107/s1600536814001135.

Full text

Abstract:

The title compound, [Rh2Br2(C8H12)2(C17H32N4)], was obtained by the reaction of 3,3′-(propane-1,3-diyl)bis(1-isopropyl-3,4,5,6-tetrahydropyrimidin-1-ium) bromide and [{Rh(cod)Cl}2] (cod is cycloocta-1,5-diene) in tetrahydrofuran. The two RhIatoms each have a distorted square-planar coordination environment, defined by a bidentate cod ligand, a bromide anion and one C atom of the bridging bidentate bis-N-heterocyclcic carbene (NHC) ligand. The average Rh—CNHCdistance is 2.038 (7) Å, suggesting that the bond has a major σ contribution with very little back donation. The distances between the cod

APA, Harvard, Vancouver, ISO, and other styles

21

Cipurković, Amira, Snježana Marić, Emir Horozić, Darja Husejnagić, and Suada Cipurković. "Copper (II) complexes with some antibiotics: synthesis, FT-IR study and in vitro antibacterial activity." International Journal of Advanced Chemistry 11, no. 1 (2023): 10–14. http://dx.doi.org/10.14419/ijac.v11i1.32251.

Full text

Abstract:

Copper (II) complexes with commercial antibiotics, amoxicillin (AMX), azithromycin (AZT) and ciprofloxacin (CFL) were synthesized and isolated as solids. Structures of the isolated products were determined by FTIR spectroscopy. Antibacterial activities were determined on reference bacterial strains from the ATCC collection by diffusion technique. The results show that AMX and CFL coordinate Cu (II) ion as bidentate O-donor ligand. AZT coordinates metal center as bidentate NO-donor ligand. A difference in the morphology of antibiotic crystals and the synthesized complexes was found. Complex of

APA, Harvard, Vancouver, ISO, and other styles

22

Valencia, Marta, Helge Müller-Bunz, Robert A. Gossage, and Martin Albrecht. "Enhanced product selectivity promoted by remote metal coordination in acceptor-free alcohol dehydrogenation catalysis." Chemical Communications 52, no. 16 (2016): 3344–47. http://dx.doi.org/10.1039/c6cc00267f.

Full text

Abstract:

A bimetallic [Ir<sup>3+</sup>]<sub>2</sub> complex was synthesized based on a bridging 1,2,3-triazole ligand that coordinates to one Cp*Ir unit as N,N-bidentate chelate, and to the other as a C,C-bidentate ligand.

APA, Harvard, Vancouver, ISO, and other styles

23

Ahmed S. M. Al-Janabi, Ahmed A. Irzoqi, and Shihab A. O. Ahmed. "Synthesis and Characterization of Mixed Ligands Cadmium (II) Complexes with N-Hydroxymethylsaccharinate and diphosphines." Tikrit Journal of Pure Science 21, no. 3 (2023): 54–60. http://dx.doi.org/10.25130/tjps.v21i3.996.

Full text

Abstract:

Reaction of cadimium(II) chloride CdCl2.6H2O with two equivalents of N-hydroxymethylsaccharin (Sac-CH2OH) (1) in the presence of NEt3 afforded the presumably tetrahedral complex [Cd(K2-Sac-CH2O)2] (2). The Sac-CH2O- ligand behaves as a bidentate chelate. Reaction of (2) with one equivalent of the bidentate ligands (dipos); Ph2P(CH2)nPPh2, (n = 1 dppm; 2 dppe; 3 dppp; 4 dppb), Ph2P(S)(CH2)P(S)Ph2 (dppmS2) afforded tetrahedral complexes of the type [Cd(K1-Sac-CH2O)2(diphos)] (3-7). The reaction with two equivalents of the monodentate ligands (phos); Ph3P or Ph3PS gave [Cd(K1-Sac-CH2O)2(phos)2] (

APA, Harvard, Vancouver, ISO, and other styles

24

Zhou, Hu, Lianghui Huang, Longhai Piao, and Sang-Ho Kim. "Bidentate ligand-protected Ag nanocrystals." Japanese Journal of Applied Physics 53, no. 5S3 (2014): 05HA05. http://dx.doi.org/10.7567/jjap.53.05ha05.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Warsink, Stefan, та Andreas Roodt. "(N-Benzoyl-N′,N′-diphenylthioureato-κ2S,O)(η4-cycloocta-1,5-diene)rhodium(I)". Acta Crystallographica Section E Structure Reports Online 68, № 8 (2012): m1053—m1054. http://dx.doi.org/10.1107/s1600536812029753.

Full text

Abstract:

The title complex, [Rh(C20H15N2OS)(C8H12)], exhibits an essentially square-planar coordination environment around the RhIatom, which bears a bidentate cyclooctadiene ligand as well as a monoanionic bidentate benzoylthioureate ligand. The RhIatom, the S- and O-donor atoms and the alkene centroids of the cyclooctadiene ligand do not deviate by more than 0.031 Å from their least mean-squares plane.

APA, Harvard, Vancouver, ISO, and other styles

26

Wu, Guojiao, Uttam Chakraborty, and Axel Jacobi von Wangelin. "Regiocontrol in the cobalt-catalyzed hydrosilylation of alkynes." Chemical Communications 54, no. 87 (2018): 12322–25. http://dx.doi.org/10.1039/c8cc07267a.

Full text

Abstract:

A highly versatile cobalt-catalyzed hydrosilylations of alkynes is reported. Near-perfect regiocontrol/stereocontrol was induced by the choice of the ligand: bidentate phosphines afforded (E)-β-vinylsilanes; α-vinylsilanes formed with bipyridine ligands.

APA, Harvard, Vancouver, ISO, and other styles

27

Roecker, Lee, Alison Anderson, Aladdin Al-Haddad, et al. "Reaction of 2-Pyridylmethylthiourea Derivatives with [(en)2Co(OSO2CF3)2]+ Induces Hypodentate Coordination of an Ethylenediamine Ligand." Australian Journal of Chemistry 67, no. 6 (2014): 933. http://dx.doi.org/10.1071/ch14029.

Full text

Abstract:

Pyridylmethylthiourea derivatives coordinate with [(en)2Co(OSO2CF3)2]+ in a tridentate manner resulting in the formation of a hypodentate ethylenediamine ligand. Four ligands were studied: N-(R)phenyl-N′-2-pyridylmethylthiourea (R = H (1a), CH3 (1b), OCH3 (1c)) and N-benzyl-N′-2-pyridylmethylthiourea (2). These bind through the sulfur, a deprotonated exo nitrogen, and the pyridyl nitrogen atoms forming four and five-membered rings, respectively. The ligand also coordinates in a bidentate manner through the sulfur and deprotonated endo or exo nitrogen atoms, forming two additional coordination

APA, Harvard, Vancouver, ISO, and other styles

28

Harding, David J., Darunee Sertphon та Phimphaka Harding. "(8-Aminoquinoline-κ2N,N′)bis(1,1,1,5,5,5-hexafluoropentane-2,4-dionato-κ2O,O′)cobalt(II)". Acta Crystallographica Section E Structure Reports Online 68, № 4 (2012): m450. http://dx.doi.org/10.1107/s1600536812011312.

Full text

Abstract:

In the title compound, [Co(C5HF6O2)2(C9H8N2)], the CoIIcentre exhibits a pseudooctahedral coordination geometry, comprising two N-atom donors from the bidentate aminoquinoline ligand and four O-atom donor atoms from two bidentate chelating 1,1,1,5,5,5-hexafluoropentane-2,4-dionate ligands. In the crystal, molecules are linkedviapairs of N—H...O hydrogen bonds, forming inversion dimers. These dimers are further connected through π–π interactions between neighbouring quinoline rings [centroid–centroid distance = 3.472 (2) Å], and stack along thecaxis.

APA, Harvard, Vancouver, ISO, and other styles

29

Spencer, Lara C., Ilia A. Guzei, Tebogo V. Segapelo та James Darkwa. "Dichlorido{2-[(3,5-diphenyl-1H-pyrazol-1-yl-κN2)methyl]pyridine-κN}palladium(II)". Acta Crystallographica Section C Crystal Structure Communications 68, № 11 (2012): m317—m319. http://dx.doi.org/10.1107/s0108270112043119.

Full text

Abstract:

The title compound, [PdCl2(C21H17N3)], is a member of a sequence of Pd, Pt and Co dichloride complexes bearing polysubstituted (pyrazol-1-ylmethyl)pyridine ligands. It is shown that there is a correlation between the steric bulkiness of the bidentate (pyrazol-1-ylmethyl)pyridine ligands and the Pd—Npyrazoledistances,i.e.the larger the ligand, the longer the bond. In contrast, no trend is observed between the steric properties of the ligand and the Pd—Npyridinebond lengths.

APA, Harvard, Vancouver, ISO, and other styles

30

Koizumi, Atsuya, Takuya Hasegawa, Atsushi Itadani, Kenji Toda, Taoyun Zhu, and Mineo Sato. "A new lanthanum(III) complex containing acetylacetone and 1H-imidazole." Acta Crystallographica Section E Crystallographic Communications 73, no. 11 (2017): 1739–42. http://dx.doi.org/10.1107/s205698901701461x.

Full text

Abstract:

In the title complex, diaqua(1H-imidazole-κN3)(nitrato-κ2O,O′)bis(4-oxopent-2-en-2-olato-κ2O,O′)lanthanum(III), [La(C5H7O2)2(NO3)(C3H4N2)(H2O)2], the La atom is coordinated by eight O atoms of two acetylacetonate (acac) anions acting as bidentate ligands, two water molecule as monodentate ligands, one nitrate anions as a bidentate ligand and one N atom of an imidazolate (ImH) molecule as a monodentate ligand. Thus, the coordination number of the La atom is nine in a monocapped square antiprismatic polyhedron. There are three types of intermolecular hydrogen bonds between ligands, the first inv

APA, Harvard, Vancouver, ISO, and other styles

31

Hussein, Mohammed Bahreldin, Muna Mahdi Mohammed, Abdalla Gobara, Asha Fadllallah Wady, and Awad Salim Ibrahim Holy. "Synthesis, characterization, and antimicrobial activity of 4-imidazolecarboxaldehyde thiosemicarbazone and its Pt(II) and Pd(II) complexes." European Journal of Chemistry 12, no. 1 (2021): 56–59. http://dx.doi.org/10.5155/eurjchem.12.1.56-59.2070.

Full text

Abstract:

Schiff bases are versatile ligands, synthesized via condensation of primary amines with carbonyl compounds. In this study, equimolar amounts of 4-imidazolecarboxaldehyde and thiosemicarbazide were combined and the Schiff base 4-imidazolecarboxaldehyde thiosemicarbazone was prepared as a new bidentate complexing agent. The synthesized ligand was reacted with palladium (II) and platinum (II) ions yielding air-stable complexes. For characterization purpose, infrared spectra, mass spectra, electronic spectra, thermal analysis, proton nuclear magnetic resonance and 13-carbon nuclear magnetic resona

APA, Harvard, Vancouver, ISO, and other styles

32

RAIIB, LAL DE, and KUMAR BHAR SANJIB. "Reactions of Sodium Cobaltinitrite with Bidentate Ligands-Synthesis of Mixed-ligand Complexes of Cobalt(III)." Journal of Indian Chemical Society Vol. 69, Dec 1992 (1992): 856–58. https://doi.org/10.5281/zenodo.6032784.

Full text

Abstract:

Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Calcutta-700 032 <em>Manuscript received 6 July 1992, accepted 18 August 1992</em> Reactions of Sodium Cobaltinitrite with Bidentate Ligands-Synthesis of Mixed-ligand Complexes of Cobalt(III).

APA, Harvard, Vancouver, ISO, and other styles

33

A., K. BANERJEE, K. SINHA SAILENDRA., and K. ROY S. "Alkaline Earth Metal Complexes: Mixed Ligand Complexes of Magnesium Oxinate with some Mono-and Bidentate Ligands." Journal of Indian Chemical Society Vol. 69, Dec 1992 (1992): 849–50. https://doi.org/10.5281/zenodo.6032632.

Full text

Abstract:

Chemistry Department, Patna University, Patna-800 005 <em>Manuscript received 29 June 1990, revised 6 August 1992, accepted 12 August 1992</em> Alkaline Earth Metal Complexes: Mixed Ligand Complexes of Magnesium Oxinate with some Mono-and Bidentate Ligands.

APA, Harvard, Vancouver, ISO, and other styles

34

KAMBLE, SNEHAL, Principal, Asst.Prof., Asso.Prof., Asst.Prof., and Asst.Prof. "GREEN SYNTHESIS, CHARACTERISATION, MIC, AND BIOACTIVITY OF DOPED COBALT METAL TARTRATE COMPLEXES." Suranaree Journal of Science and Technology 31, no. 5 (2024): 030219(1–7). https://doi.org/10.55766/sujst-2024-05-e03921.

Full text

Abstract:

Novel mixed transition metal complexes MnCo2(C4H4O6)36H2O and NiCo2(C4H4O6)36H2O are synthesized using green approach, these tartrate act as a bidentate ligand. For characterisation of complexes elemental analysis, FTIR, XRD, TGA, and SEM with EDAX techniques were used. Analytical data shows that all complexes exhibited 1:1 (metal: ligand) ratio. IR spectral data shows that bidentate ligand coordinate with metal ion as bidentate ligand through the two ‘O’ atoms. The TGA of the complexes showed good agreement with their suggested formulae. XRD technique shows that all the complexes found to be

APA, Harvard, Vancouver, ISO, and other styles

35

Hussein, Mohammed Bahreldin, Muna Mahdi Mohammed, and Yousif Sulfab. "Synthesis, Characterization And Antimicrobial Study of Pd(II) and Pt(II) complexes of 4-methyl-5-Imidazolecarboxaldehyde Thiosemicarbazone." Scholars International Journal of Chemistry and Material Sciences 6, no. 1 (2023): 1–17. http://dx.doi.org/10.36348/sijcms.2023.v06i01.001.

Full text

Abstract:

Schiff bases are regarded as “privileged ligands” due to their capability to form complexes with a wide range of transition metal ions yielding stable and intensely colored metal complexes. In this study, equimolar amounts of 4-methyl-5-imidazolecarboxaldehyde and thiosemicarbazide were combined and the Schiff base 4-methyl-5-imidazolecarboxaldehyde thiosemicarbazone was prepared as a new bidentate complexing agent. The synthesized ligand was reacted with palladium (II) and platinum (II) ions yielding air-stable complexes. For characterization purpose, mass spectra and x-ray analysis of the li

APA, Harvard, Vancouver, ISO, and other styles

36

RAJIB, LAL DE, and KUMAR BHAR SANJIB. "Reactions of Sodium Cobaltinitrite with Bidentate—Ligands-Synthesis of Mixed-ligand Complexes of Cobalt(III)." Journal of Indian Chemical Society Vol. 69, Dec 1992 (2022): 856–58. https://doi.org/10.5281/zenodo.6118477.

Full text

Abstract:

Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Calcutta-700 032 <em>Manuscript received 6 July 1992, accepted 18 August 1992</em> Reactions of Sodium Cobaltinitrite with Bidentate—Ligands-Synthesis of Mixed-ligand Complexes of Cobalt(III).  

APA, Harvard, Vancouver, ISO, and other styles

37

Ali, Alaa, Ahmed Irzoqi, and Pramod Singh. "Synthesis, Characterization, and Biological Evaluation of New Hg(II) Complexes of (2-(2-(2-chlorobenzylidene)hydrazineyl)benzothiazole with Phosphine Ligands." Tikrit Journal of Pure Science 29, no. 2 (2024): 7–19. http://dx.doi.org/10.25130/tjps.v29i2.1568.

Full text

Abstract:

The Synthesis of new Hg(II) complexes of (2-(2-(2-chlorobenzylidene) hydrazinyl)benzothiazole) (CHB) with phosphine ligands (dppm, dppe, dppp, and dppb) were synthesized, resulting in complexes with the following formulas: [Hg2(CHB)2(µ-dppm)2]Cl4 or [Hg2(CHB)2(µ-phosphine)Cl2]Cl2 (where the phosphines are dppe, dppp and dppb). The suggested geometry around the metal ion is tetrahedral, with the (CHB) ligand acting as a bidentate ligand through the N atoms, while the phosphine ligands act as bidentate bridging ligands through the P atoms. The prepared complexes were characterized various analyt

APA, Harvard, Vancouver, ISO, and other styles

38

Senelaa, Evrim, Veysel T. Yilmaz та William T. A. Harrison. "A New One-Dimensional Coordination Polymer of Silver(I) with Bridging 2-(2-Aminoethyl)pyridine and Nitrato Ligands: [Ag2(μ–NO3)2(μ–aepy)2]n". Zeitschrift für Naturforschung B 60, № 6 (2005): 659–62. http://dx.doi.org/10.1515/znb-2005-0608.

Full text

Abstract:

A new silver(I) nitrate complex of 2-(2-aminoethyl)pyridine (aepy), [Ag2(μ-NO3)2(μ-aepy)2]n, has been synthesized and characterized by elemental analysis, IR spectroscopy and single crystal X-ray diffractometry. Two silver(I) ions are doubly bridged by two bidentate aepy ligands forming dimeric building block [Ag2(μ-aepy)2] units with a Ag···Ag distance of 3.0587(17)Å . These dimeric units are further doubly bridged by two nitrato ligands into a one-dimensional polymeric chain. The nitrato ligand exhibits an uncommon bidentate bridging mode of Ag-ONO-Ag. The title complex features a hydrogen b

APA, Harvard, Vancouver, ISO, and other styles

39

A., K. BANERJEE, K. SINHA SAILENDRA., and K. ROY S. "Alkaline Earth Metal Complexes: Mixed Ligand Complexes of Magnesium Oxinate with some Mono-and Bidentate Ligands." Journal of Indian Chemical Society Vol. 69, Dec 1992 (1992): 849–50. https://doi.org/10.5281/zenodo.6117629.

Full text

Abstract:

Chemistry Department, Patna University, Patna-800 005 <em>Manuscript received 29 June 1990, revised 6 August 1992, accepted 12 August 1992</em> Alkaline Earth Metal Complexes: Mixed Ligand Complexes of Magnesium Oxinate with some Mono-and Bidentate Ligands.<em> </em>  

APA, Harvard, Vancouver, ISO, and other styles

40

Zhang, Qi-Ying, Heng-Qiang Zhang, Ai-Guo Kong, Qian Yang, and Yong-Kui Shan. "Synthesis and Crystal Structure of the Novel Three-dimensional Vanadium Coordination Compound Potassium Oxo-bis(hydroxylamido)malonatovanadate(V)." Zeitschrift für Naturforschung B 65, no. 2 (2010): 157–62. http://dx.doi.org/10.1515/znb-2010-0210.

Full text

Abstract:

In the crystal structure of the title complex, K2[(VO)2(NH2O)4(C3H2O4)2] ・ 3H2O, the V(V) centre is bound to a chelating malonate ligand, two bidentate hydroxylamido ligands and one oxo ligand, defining a pentagonal bipyramidal coordination (VO5N2). The potassium cations are found to adopt two types of coordination geometry with the malonate ligand, the bidentate hydroxylamido ligand and water molecules: the first one is hepta-coordinate in an irregular K(1)O7 polyhedron, and the second one is octa-coordinate in an irregular K(2)O8 polyhedron. The K(1)O7/K(2)O8 and VO5N2 polyhedra are closely

APA, Harvard, Vancouver, ISO, and other styles

41

Takacs, James M., Kittichai Chaiseeda, Shin A. Moteki, D. Sahadeva Reddy, Di Wu, and Kusumlata Chandra. "Rhodium-catalyzed asymmetric hydrogenation using self-assembled chiral bidentate ligands." Pure and Applied Chemistry 78, no. 2 (2006): 501–9. http://dx.doi.org/10.1351/pac200678020501.

Full text

Abstract:

The chirality-directed self-assembly of bifunctional subunits around a structural metal - typically, zinc(II) - is used to form a heteroleptic complex in which a second set of ligating groups are suitably disposed to bind a second metal, forming a heterobimetallic catalyst system. We find that subtle changes in the structural backbone (i.e., ligand scaffold) of such chiral bidentate self-assembled ligands (SALs) can be used to manipulate the ligand topography and chiral environment around catalytic metal; thus, the scaffold can be optimized to maximize asymmetric induction. Using this combinat

APA, Harvard, Vancouver, ISO, and other styles

42

Roupa, Ioanna, Michael Kaplanis, Catherine Raptopoulou та ін. "Crystal structure of fac-aqua[(E)-4-(benzo[d]thiazol-2-yl)-N-(pyridin-2-ylmethylidene)aniline-κ2 N,N′]tricarbonylrhenium(I) hexafluoridophosphate methanol monosolvate". Acta Crystallographica Section E Crystallographic Communications 75, № 5 (2019): 580–84. http://dx.doi.org/10.1107/s2056989019004298.

Full text

Abstract:

In the title compound, fac-[Re(C19H13N3S)(CO)3(H2O)]PF6·CH3OH, the coordination environment of the ReI atom is octahedral with a C3N2O coordination set. In this molecule, the N,N′ bidentate ligand, (E)-4-(benzo[d]thiazol-2-yl)-N-(pyridin-2-ylmethylidene)aniline, and the monodentate aqua ligand occupy the three available coordination sites of the [Re(CO)3]+ core, generating a `2 + 1' mixed-ligand complex. In this complex, the Re—C bonds of the carbonyl ligands trans to the coordinating N,N′ atoms of the bidentate ligand are longer than the Re—C bond of the carbonyl group trans to the aqua ligan

APA, Harvard, Vancouver, ISO, and other styles

43

Boonlue, Sujirat, Anchalee Sirikulkajorn та Kittipong Chainok. "Crystal structure of bis[μ-methoxy(pyridin-2-yl)methanolato-κ3N,O:O]bis[chloridocopper(II)]". Acta Crystallographica Section E Crystallographic Communications 71, № 2 (2015): m44—m45. http://dx.doi.org/10.1107/s2056989015001310.

Full text

Abstract:

The racemic title compound, [Cu2(C7H8NO2)2Cl2], is composed of dinuclear molecules in which methoxy(pyridin-2-yl)methanolate ligands bridge two symmetry-related CuIIions. Each CuIIion is coordinated in a square-planar geometry by one Cl atom, the N and O atoms of the bidentate ligand and the bridging O atom of the centrosymmetrically related bidentate ligand. The separation between the two CuIIatoms is 3.005 (1) Å. In the crystal, non-classical C—H...O hydrogen bonds, weak π–π stacking [centroid–centroid distance = 4.073 (1) Å] and weak electrostatic Cu...Cl interactions [3.023 (1) Å] link the

APA, Harvard, Vancouver, ISO, and other styles

44

Vadivel, T., M. Dhamodaran, S. Kulathooran, M. Kavitha, and K. Amirthaganesan. "In Vitro Evaluation of Antifungal Activities by Permeation of Ru(III) Complexes Derived from Chitosan-Schiff Base Ligand." Current Applied Polymer Science 3, no. 3 (2020): 212–20. http://dx.doi.org/10.2174/2452271603666191016130012.

Full text

Abstract:

Background: The transition metal complexes are derived from a natural biopolymer which is a very potent material in various research areas of study. Objective: This study aims to show the preparation of ruthenium(III) complexes from chitosan Schiff base ligand for effective application in antifungal studies. Methods: Chemical modification was carried out through a condensation reaction of chitosan with some aromatic aldehydes, which resulted in the formation of a bidentate Schiff base ligand. The Ru(III) complexes were prepared by complexation of ruthenium metal ion with bidentate ligands. The

APA, Harvard, Vancouver, ISO, and other styles

45

Kariaka, Nataliia S., Viktoriya V. Dyakonenko, Kateryna O. Znovjyak, Svitlana V. Shishkina, and Volodymyr M. Amirkhanov. "Synthesis, crystal structure and Hirshfeld surface analysis of the tetrakis complex NaNdPyr₄(i-PrOH)₂·i-PrOH with a carbacylamidophosphate of the amide type." Acta Crystallographica Section E Crystallographic Communications 79, no. 12 (2023): 1218–22. http://dx.doi.org/10.1107/s2056989023010071.

Full text

Abstract:

The tetrakis complex of neodymium(III), tetrakis{μ-N-[bis(pyrrolidin-1-yl)phosphoryl]acetamidato}bis(propan-2-ol)neodymiumsodium propan-2-ol monosolvate, [NaNd(C10H16Cl3N3O2)4(C3H8O)2]·C3H8O or NaNdPyr4(i-PrOH)2·i-PrOH, with the amide type CAPh ligand bis(N,N-tetramethylene)(trichloroacetyl)phosphoric acid triamide (HPyr), has been synthesized, crystallized and characterized by X-ray diffraction. The complex does not have the tetrakis(CAPh)lanthanide anion, which is typical for ester-type CAPh-based coordination compounds. Instead, the NdO8 polyhedron is formed by one oxygen atom of a 2-propan

APA, Harvard, Vancouver, ISO, and other styles

46

Alaa, E. Ali, S. Elasala Gehan, and Ramadan Yasser. "Synthesis and Characterization of Mixed-Ligand Complexes Containing Isonid and Ethanolamine." Chemistry Research Journal 6, no. 3 (2021): 132–38. https://doi.org/10.5281/zenodo.11665323.

Full text

Abstract:

<strong>Abstract </strong>Synthesis, spectral characterization and thermal analysis of mixed ligand  complexes with transition metals (Cr(III), Mn(II), Fe(III), Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Hg(II)) were discussed. Mixed ligands act as bidentate ligands with formation of 1:1:1 (M: L:L). Measurement of magnetism and spectral data shows octahedral structures for all complexes. Hyper chemistry program confirmed the binding sites of mixed ligand. Complexes show higher activity than commercial one for some strains.

APA, Harvard, Vancouver, ISO, and other styles

47

MAHMOUD, A. S. MONSHI. "Transition Metal Complexes of 5-[ 4' -(Nitrophenyl)azo]salicylaldehyde-3-thiosemicarbazone." Journal of Indian Chemical Society Vol. 75, Mar 1998 (1998): 158–59. https://doi.org/10.5281/zenodo.5915665.

Full text

Abstract:

Department of Chemistry, King Saud University, P.O. Box 2455, Riyadh-11451, Saudi Arabia <em>Manuscript received 25 September 1996, revised 2 June 1997, accepted 12 June 1997</em> Metal complexes formed by the interaction of 5-[4'-(nitrophenyl)azo]salicylaldehyde-3-thiosemicarbazone [HAT] with some bivalent metal ion have been prepared. The ligand behaves as neutral bidentate, as mononegative bidentate or tridentate ligand.

APA, Harvard, Vancouver, ISO, and other styles

48

Jiang, Dandan, Qianqian Li, Mingxing Fu, Xuefei Zhao, Qingyong Meng, and Lili Zhao. "Mechanistic insight into the highly regioselective Ni(0)-catalyzed [2 + 2] self-cycloaddition of electron-deficient allenoates." Catalysis Science & Technology 9, no. 5 (2019): 1273–78. http://dx.doi.org/10.1039/c8cy02434k.

Full text

Abstract:

A DFT study reveals that the Ni(0)-catalyzed [2 + 2] self-cycloaddition of electron-deficient allenoates proceeds via the one-ligand-involved mechanism. In addition, the origin of the high regioselectivity of the product, as well as the lower efficiency of the bidentate ligands, is discussed.

APA, Harvard, Vancouver, ISO, and other styles

49

Hill, Denise D., та Edward R. T. Tiekink. "catena-Poly[[bis(O-isopropyl dithiocarbonato-κ2 S,S′)nickel(II)]-μ-1,2-di-4-pyridylethane-κ2 N:N′]". Acta Crystallographica Section E Structure Reports Online 63, № 11 (2007): m2808. http://dx.doi.org/10.1107/s1600536807051616.

Full text

Abstract:

The Ni atom in the zigzag polymeric title complex, [Ni(C4H7OS2)2(C12H12N2)] n , is situated on a twofold axis and the bridging ligand situated about a centre of inversion. The structure features a distorted octahedral cis-NiN2S4 coordination geometry defined by two chelating O-isopropyl dithiocarbonate ligands and two N atoms derived from the bidentate bridging ligands.

APA, Harvard, Vancouver, ISO, and other styles

50

Piehler, Torsten, and Arne Lützen. "Enantiomerically Pure C2-symmetric Dinuclear Silver(I) and Copper(I) Complexes from a Bis(2,2´-bipyridine)-substituted 9,9´-Spirobifluorene Ligand." Zeitschrift für Naturforschung B 65, no. 3 (2010): 329–36. http://dx.doi.org/10.1515/znb-2010-0316.

Full text

Abstract:

We have prepared a new bis(bipyridyl) ligand 1 based on a chiral 9,9´-spirobifluorene core in both enantiomerically pure forms. This ligand was found to undergo diastereoselective self-assembly to optically pure dinuclear coordination compounds upon coordination to copper(I) and silver(I) ions. Surprisingly, however, the resulting diastereomer was not found to be D2-symmetric which is usually found for similar bis(bidentate) ligands, but rather C2-symmetric with differently configurated metal centers.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!