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Journal articles on the topic 'Transition metal complexes - Spectra'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 January 2023

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1

Kawamoto, Keisuke, and Hideki Hashimoto. "Electroabsorption (Stark) Spectra of Transition Metal Complexes." Bulletin of Japan Society of Coordination Chemistry 67 (2016): 75–79. http://dx.doi.org/10.4019/bjscc.67.75.

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2

Kumar, Kaushal, Neha Mishra, Satyesh Raj Anand, and Satya Prakash Shrivastava. "Synthesis and Properties of Transition Metal Complexes Containing Thiazole Derived Schiff Base Ligands." Oriental Journal Of Chemistry 38, no. 5 (2022): 1209–16. http://dx.doi.org/10.13005/ojc/380516.

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Although ligands containing four donor atom are tetradentate ligand of Thiazole moiety which coordinated with transition metal ions. The complex of m-NTA and m-MTA are studies by different spectral technique. Here we are synthesizing the thiazole derivatives Schiff base as a ligands, L1 = N,N'E,N,N'E)-N,N'-(1,3- phenylene bis (methanylylidene) bis (5-nitrobenzo [d] thiazo L2-amine (NTA) and L2 = N,N'E,N,N'E)-N,N'-(1,3-phenylene bis (methanylylidene) bis (5-methyl thiazo L2-amine (MTA), and coordinated with transition metals ( Co, Ni, Cu, Zn, and Cd) using lone-pair coordination method. These s

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3

Prashanthi, Y., and Shiva Raj. "Synthesis and Characterization of Transition Metal Complexes with." Journal of Scientific Research 2, no. 1 (2009): 114–26. http://dx.doi.org/10.3329/jsr.v2i1.2732.

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The Schiff bases namely MIMFMA, MIMTMA and MIPMA have been prepared by reacting 3-amino-5-methyl isoxazole with 5-methyl furan-2-carboxyaldehyde, 5-methyl thiphene-2-carboxaldehyde and pyridine-2-carboxaldehyde. The Cu(II), Ni(II), Co(II), Zn(II) and VO(IV) have been prepared by reacting metal chlorides with those Schiff bases in an alchololic medium. The complexes are electrolytes in DMSO. These have been characterized by using elemental analysis, IR, UV-VIS, 1H, 13C, mass spectra, magnetic susceptibility, conductance measurements and thermo gravimetric studies. The complexes were found to ha

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4

Malik, Suman, Supriya Das, Archana Singh, and Liviu Mitu. "3D-Metal Complexes Derived from Proton Pump Inhibitors-Synthesis, Characterization and Biological Studies." E-Journal of Chemistry 9, no. 4 (2012): 1919–28. http://dx.doi.org/10.1155/2012/969760.

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Complexes of lansoprazole 2[[[[3-methyl, 4-(2′,2′,2′-trifluoro-ethoxy)]-2-pyridinyl] methyl]sulfonyl]–1H–benzimidazole (LAN) with chlorides of Co(II), Ni(II), Cu(II), Mn(II) and Zn(II) were synthesized. LAN is a weak base and it can form several complexes with transition and non-transition metal ions. It should be noticed that the reaction of all the metal salts yielded bis(ligand) complexes of the general formula [ML2(H2O)2] and [ML2] (M = Co, Ni, Cu, Mn and Zn). The complexes were characterized by elemental analysis, molar conductivity, magnetic susceptibility measurements, IR,1H-NMR, UV-vis

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5

Sethi, Pooja, Rajshree Khare, Jyoti Sharma, Anjana Kumari, and Simrat Kaur. "Mechanochemical Synthesis, Characterization and Biological Exploration of Pyrimidinethione based ligands." Research Journal of Chemistry and Environment 26, no. 9 (2022): 12–20. http://dx.doi.org/10.25303/2609rjce12020.

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The mechanochemical synthesis of 1-(4-Nitro phenylamino)-4,4,6-trimethyl-3,4-dihydro pyrimidine-2-(1H)- thione (Hnppt) based ligand and its metal complexes with Cu(II), Co(II), Ni(II), Mn(II), Cd(II), Pd(II) has been achieved. The synthesized ligand and its coordination complexes were evaluated for antibacterial ability and DNA photocleavage potential by using plasmid DNA. Ligand(Hnppt) was prepared and then it was allowed to chelate with different transition metals in 1:2 metal ligand ratio. All the complexes were then characterized by IR, Mass, NMR, magnetic moment, electronic spectra like s

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6

Kumar, Manoj, Anita Rani, Hardeep Singh Tuli, Rajshree Khare, and Vinit Parkash. "Synthesis and Spectral Investigations of Polymeric Hydrazone Schiff Base and its Transition Metal Complexes with Promising Antimicrobial, Anti-Angeogenic and DNA Photo-Cleavage Activities." Asian Journal of Chemistry 31, no. 10 (2019): 2331–36. http://dx.doi.org/10.14233/ajchem.2019.22157.

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This report describes the synthesis and exploration of novel Schiff base ligand in the form of a polymer (heptamer) which was prepared by reaction between 3,4-diacetyl-2,5-hexanedione and hydrazine hydrate in ethanol. On further reaction of Schiff base with transition metals ions (Co and Cu) leads to formation of its transition metal complexes. The structural identification of Schiff base ligand and its transition metal complexes were characterized by classical structural techniques like FT-IR, NMR and mass spectra. The free ligand and its transition metal complexes have been screened for in v

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7

Basavaraja, Thippeswamy, Somashekara Bhadrachar, and Kittappa M. Mahadevan. "Transition Metal Complexes of Pyridyl Ligand as Light Emitting Materials in OLEDs." Asian Journal of Chemistry 32, no. 1 (2019): 161–66. http://dx.doi.org/10.14233/ajchem.2020.22371.

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Transition metal complexes, viz., tetrapyridylbis(isothiocyanato)nickel(II) (1), dipyridylbis (isothiocyanato)copper(II) (2) and dipyridylbis-(isothiocyanato)zinc(II) (3) were synthesized by conventional methods. All the synthesized metal complexes were characterized by spectral and elemental analysis. Diffused reflectance (DR) spectra of the complexes 1-3 recorded in the range 200-1100 nm exhibit major peaks at 450 nm and 750 nm (% diffused reflectance 50 and 55, respectively) for complex 1, 500 nm (20 % diffused reflectance) for complex 2 and 400 nm (50 % diffused reflectance) for complex 3.

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8

Griffith, William P., Alastair J. Nielson, and Michael J. Taylor. "Raman spectra of some transition-metal imido complexes." Journal of the Chemical Society, Dalton Transactions, no. 3 (1988): 647. http://dx.doi.org/10.1039/dt9880000647.

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9

Sandorfy, C., L. S. Lussier, G. Richer, A. Goursot, E. Pénigault, and J. Weber. "The far-ultraviolet spectra of transition metal complexes." Journal of Molecular Structure 141 (March 1986): 1–12. http://dx.doi.org/10.1016/0022-2860(86)80309-x.

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10

Zhang Yugeng, Li Jianmin, Su Qinde, and Zhao Guiwen. "Photoacoustic spectra of o-sulphobenzoimide transition metal complexes." Spectrochimica Acta Part A: Molecular Spectroscopy 48, no. 2 (1992): 175–80. http://dx.doi.org/10.1016/0584-8539(92)80020-w.

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11

Kader, Thuraya A., and Basima M. Sarhan. "Synthesis and Spectro Scopic Study of Some Metal Transition Amino Organic Compounds with N-(2-OXO-1,2-Dihydropyrimidin-4-Ylcarbamothioyl) Acetamide (DPA)." Pakistan Journal of Medical and Health Sciences 16, no. 6 (2022): 543–47. http://dx.doi.org/10.53350/pjmhs22166543.

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A New ligand, N-(2-oxo-1,2- Dihydropyrimidin-4- ylcarbamothioyl) Acetamide (DPA) was prepared by reaction of iso thiosyanate derivative with Cytosine. The ligand has been characterized through elemental analysis, H1 NMR, C13NMR, FT-IR, and UV Visible spectra, such ligand’s transition metal complexes have been characterized through conductivity measurement, FT-IR, UV Visible spectra and magnetic susceptibility, all the complexes of this ligand are solid crystal and molar ratio (2:1) (ligand: metal). The form of molecular for these complexes octa hedral. The general formula [M(DPA)2Cl2], where M

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12

Malik, Suman, Supriya Das, and Bharti Jain. "Transition Metal Complexes of Omeprazole An Anti-Ulcerative Drug." Eclética Química Journal 36, no. 3 (2017): 31. http://dx.doi.org/10.26850/1678-4618eqj.v36.3.2011.p31-36.

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Omeprazole (OME) is a proton pump inhibitor (PPI). PPI’s have enabled to improve the treatment of various acidpeptic disorders. OME is a weak base and it can form several complexes with transition and non-transitions metal ions. In the present paper, we are describing series of trantion metal complexes of omeprazole i.e.,5-methoxy-2[(4methoxy-3,5dimethyl-2-pyridinyl)methylsulfinyl]–1H–benzimidazole with CuII, MnII, CoII, NiII, FeII, ZnII and HgII. These complexes were characterized by elemental analysis, molar conductance, IR, NMR, magnetic susceptibility, UV-visible spectral studies, ESR, SEM

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13

Hasan, Hamad M. I., Aaza I. Yahiya, Safaa S. Hassan, and Mabrouk M. Salama. "Biological Study of Transition Metal Complexes with Adenine Ligand." Proceedings 41, no. 1 (2019): 77. http://dx.doi.org/10.3390/ecsoc-23-06601.

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Adenine complexes were prepared with some of the first series transition metals in a stoichiometric ratio of 1: 2 (Mn+: L), where Mn+ = Mn2+, Fe3+, Co2+, Ni2+, Cu2+, Zn2+, and Cd2+ ions. The Complexes were characterized by the physicochemical and spectroscopic techniques as electric conductivity, metal contents, IR, UV–Visible, and molar conductance techniques. The stoichiometric ratios of the synthesized complexes were confirmed by using molar ratio method. The dissociation constant of adenine ligand was determined spectrophotometrically. Solvent effect on the electronic spectra of the adenin

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14

S. Refat, M., T. A. Altalhi, G. H. Al-Hazmi, and J. Y. Al-Humaidi. "Synthesis, characterization, thermal analysis and biological study of new thiophene derivative containing o-aminobenzoic acid ligand and its Mn(II), Cu(II) and Co(II) metal complexes." Bulletin of the Chemical Society of Ethiopia 35, no. 1 (2021): 129–40. http://dx.doi.org/10.4314/bcse.v35i1.11.

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New ligand containing 2-(2,4-dioxo-4-thiophen-2-yl-butyrylamino)-benzoic acid (HL) merged moiety was synthesized and characterized by FT-IR, elemental analyses, mass spectra and 1H-NMR spectral. In the present study, the attempts were carried to form complexes of HL ligand with some transition metal ions (MnII, CuII and CoII) of well-defined at the (1:1) ratio of the components in the dimethyl sulfoxide (DMSO) solvent. All complexes have been studied by FTIR spectra, elemental analyses, thermal analysis, molar conductivity, electronic spectra and magnetic moment. The HL ligand produced as a bi

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15

Arab Ahmadi, Raziyeh, Farshideh Hasanvand, Giuseppe Bruno, Hadi Amiri Rudbari, and Saeid Amani. "Synthesis, Spectroscopy, and Magnetic Characterization of Copper(II) and Cobalt(II) Complexes with 2-Amino-5-bromopyridine as Ligand." ISRN Inorganic Chemistry 2013 (January 13, 2013): 1–7. http://dx.doi.org/10.1155/2013/426712.

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The synthesis, spectroscopic, and magnetic characterization of two new copper(II) and cobalt(II) complexes are described. Both two compounds have the general formula [M(L)2(Cl)2], in which L= 2-amino-5-bromopyridine. These complexes were prepared in one-step synthesis and characterized by elemental analysis, FTIR, UV-Vis, and EPR spectroscopy. Moreover, the single crystal structure of complex (1) was studied by the X-ray diffraction method. This compound consists of mononuclear units consisting of two ligands linked to metal via the nitrogen of pyridine ring. The UV-Vis spectra of copper(II) a

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16

Prasad, Bipin Bihari, and Ramjee Sah. "A biomimicing approach to the mixed ligand complexes of bivalent transition metal." International Journal of Applied Sciences and Biotechnology 1, no. 1 (2013): 16–20. http://dx.doi.org/10.3126/ijasbt.v1i1.7922.

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Metal complexes of the type ML1L2[M=Cu(II), Ni(II), and Co(II), L1=?,?'-dipyridyl(dipy.), L2=2-hydroxybenzalidine anthranilic acid (HBAA)] have been synthesized by using ?,?'-dipyridyl(dipy.), 2-hdroxybenzalidine anthranilic acid (HBAA) and metal(II) acetate. The resulting mixed ligand metal complexes have been characterized on the basis of elemental analysis, IR-spectra, electronic spectra, magnetic susceptibilities and molar conductance measurements. The antifungal and antibacterial activities of ligands and there metal complexes have been screened against Aspergillus flavus, Aspergillus fum

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17

Luber, Sandra, and Markus Reiher. "Raman optical activity spectra of chiral transition metal complexes." Chemical Physics 346, no. 1-3 (2008): 212–23. http://dx.doi.org/10.1016/j.chemphys.2008.01.046.

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18

Raman, Natarajan, Chinnathangavel Thangaraja, and Samuelraj Johnsonraja. "Synthesis, spectral characterization, redox and antimicrobial activity of Schiff base transition metal(II) complexes derived from 4-aminoantipyrine and 3-salicylideneacetylacetone." Open Chemistry 3, no. 3 (2005): 537–55. http://dx.doi.org/10.2478/bf02479281.

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AbstractA novel tetradentate N2O2 type Schiff base, synthesized from 1-phenyl-2,3-dimethyl-4-aminopyrazol-5-one(4-aminoantipyrine) and 3-salicylidene-acetylacetone, forms stable complexes with transition metal ions such as CuII, NiII, CoII and ZnII in ethanol. Microanalytical data, magnetic susceptibility, IR, UV-Vis.,1H-NMR, ESR and Mass spectral techniques were used to confirm the structures. Electronic absorption spectra of the complexes suggest a square-planar geometry around the central metal ion. These complexes show higher conductance values, supporting their electrolytic nature. The mo

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19

Malik, Suman, Supriya Das, and Bharti Jain. "FIRST-ROW TRANSITION METAL COMPLEXES OF OMEPRAZOLE AS ANTI-ULCERATIVE DRUGS." Indonesian Journal of Chemistry 10, no. 3 (2010): 382–89. http://dx.doi.org/10.22146/ijc.21447.

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Omeprazole (OME) is a proton pump inhibitor (PPI). PPIs have enabled to improve the treatment of various acid-peptic disorders. OME is a weak base and it can form several complexes with transition and non-transition metal ions. In the present paper, we are describing series of transition metal complexes of omeprazole i.e., 5-methoxy-2[(4methoxy-3, 5dimethyl-2-pyridinyl) methylsulfinyl]-1H-benzimidazole with CuII, MnII, CoII, NiII, FeII, ZnII and HgII. These complexes were characterized by elemental analysis, molar conductivity, IR, NMR, magnetic susceptibility, UV-visible spectral studies, ESR

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20

Berezhnytska, Оeksandra, Oleksandr Rohovtsov, Artur Horbenko та ін. "THE COORDINATION COMPOUNDS Gd (III) AND Dy(III) WITH SOME β-DIKETONES". Ukrainian Chemistry Journal 87, № 6 (2021): 97–120. http://dx.doi.org/10.33609/2708-129x.87.06.2021.97-120.

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New complexes of Dy (III) and Gd (III) with b-diketones containing unsaturated and aryl substituents were synthesized. Metal polymers based on synthesized complexes were obtained by the method of radical polymerization. The composition and structure of synthesized complexes and metal polymers are established. It is shown that during polymerization the coordination environment of the central ion remains unchanged. The spectral-luminescent characteristics of the synthesized compounds were studied. The presence of water molecules in the immediate coordination environment causes a low intensity o

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21

Louloudi, Maria, Nick Hadjiliadis, Jean Pierre Laussac, and Robert Bau. "Transition and Group IIB Metal Complexes With “Active Aldehyde” Derivatives of Thiamine." Metal-Based Drugs 1, no. 2-3 (1994): 221–31. http://dx.doi.org/10.1155/mbd.1994.221.

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The Zn2+, Cd2+, Hg2+, Co2+ and Ni2+ ions produce zwitterionic type complexes with the ligands (L), 2-(α-hydroxy-benzyl)thiamine=HBT and 2-(α-hydroxy-cyclohexyl-methyl)thiamine = HCMT, of the type MLCl3. The ligands are in the S conformation, the metals are bound to N1, of the pyrimidine moiety of thiamine and the complexes have a trigonally distorted tetrahedral structure, as the crystal structure of the complex Zn(HCMT)Cl3 (orthorombic, a=14.4 b=14.1 c=17.4 β=105.6O V=3392A3 R=13.8%), the one and two dimensional H1 nmr spectra of the Zn2+, Cd2+ and Hg2+ complexes and the electronic spectra of

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22

Biradar, Vivekanand D., and B. H. M. Mruthyunjayaswamy. "Synthesis Characterization and Antimicrobial Activity Studies of Some Transition Metal Complexes Derived from 3-Chloro-N′-[(1E)-(2-hydroxy phenyl)methylene]-6-methoxy-1-benzothiophene-2-carbohydrazide." Scientific World Journal 2013 (2013): 1–13. http://dx.doi.org/10.1155/2013/451629.

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A series of new coordination complexes of Cu(II), Co(II), Ni(II), Zn(II), Hg(II), Mn(II), and Fe(III) with the Schiff base 3-chloro-N′-[(1E)-(2-hydroxy phenyl)methylene]-6-methoxy-1-benzothiophene-2-carbohydrazide (HL) have been synthesized and characterized by elemental analysis, electrical conductivity measurements, IR spectra,1H NMR, mass spectral data, electronic spectra, magnetic susceptibility, ESR spectra, TGA, and Powder XRD data. The Schiff base behaves as tridentate ONO donor ligand and forms the complexes of the type ML2(metal-ligand) stoichiometry for Cu(II), Co(II), Ni(II), and Mn

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23

Rani, Rekha, Umesh Kumar, Deepak Kumar, Siteshwar Pd Yadav, Arjun Kr Sinha та S. Sharma. "Spectroscopic, Thermal and Antimicrobial Study of Some Transition Metal(II) Complexes of β-Diketones". Asian Journal of Chemistry 32, № 12 (2020): 3173–78. http://dx.doi.org/10.14233/ajchem.2020.22911.

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A novel heterocyclic based β-diketone has been synthesized by the condensation of pyrazole-1-acetylchloride and sodium acetophenone. The product 1-phenyl-4-(pyrazole-1-yl)butane- 1,3-dione has been used for complexation with Mn(II), Fe(II) and Co(II) metal ions. The ligand β-diketone is found to exist in keto-enol tautomeric forms. The comparision of infrared spectra of complexes clearly indicates the coordination of the ligand from its enolic form. The magnetic moment and electronic spectra of all the metal complexes leads to the distorted octahedral symmetry around the metal ion. The ligand

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24

Sumrra, Sajjad Hussain, Muhammad Ibrahim, Sabahat Ambreen, Muhammad Imran, Muhammad Danish, and Fouzia Sultana Rehmani. "Synthesis, Spectral Characterization, and Biological Evaluation of Transition Metal Complexes of Bidentate N, O Donor Schiff Bases." Bioinorganic Chemistry and Applications 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/812924.

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New series of three bidentate N, O donor type Schiff bases(L1)–(L3)were prepared by using ethylene-1,2-diamine with 5-methyl furfural, 2-anisaldehyde, and 2-hydroxybenzaldehyde in an equimolar ratio. These ligands were further complexed with Co(II), Cu(II), Ni(II), and Zn(II) metals to produce their new metal complexes having an octahedral geometry. These compounds were characterized on the basis of their physical, spectral, and analytical data. Elemental analysis and spectral data of the uncomplexed ligands and their metal(II) complexes were found to be in good agreement with their structures

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25

Mohamed S. Teleb, Soha F. Mohammed, and Akmal S. Gaballa. "Syntheses and identification of cefotaxime-non-transition metal complexes." International Journal of Research in Pharmaceutical Sciences 12, no. 2 (2021): 1213–22. http://dx.doi.org/10.26452/ijrps.v12i2.4660.

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The coordination chemistry of the biologically active cefotaxime sodium and, in particular, the mode of its interaction with some metal ions of electronic configuration d0 (alkaline earth) and others, Zn(II), Pb(II), and Ce ions with the electronic configuration d10 has been investigated. Seven complexes were synthesized, isolated in the solid-state, and characterized by elemental analyses, conductivity measurements, IR and UV/VIS spectra, as well as thermal analyses. Based on the obtained experimental data and literature, the structural formulae to these complexes were suggested and formulate

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26

Scharf, Austin B., Shao-Liang Zheng, and Theodore A. Betley. "Luminescence from open-shell, first-row transition metal dipyrrin complexes." Dalton Transactions 50, no. 19 (2021): 6418–22. http://dx.doi.org/10.1039/d1dt00945a.

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Several first-row transition metal complexes of the 1,9-bis(2′,4′,6′-triphenylphenyl)-5-mesityl dipyrrinato ligand and its tetrahalogenated analogues have been synthesized and their luminescence spectra obtained.

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27

Srinivasulu, Kummara, Katreddi Hussain Reddy, K. Anuja, D. Dhanalakshmi, and Golla Ramesh. "DNA Binding Properties and Antibacterial Activity of Heterolyptic Transition Metal Complexes with 2,2-Bipyridyl and 2-Acetylthiophene Thiosemicarbazone." Asian Journal of Chemistry 31, no. 9 (2019): 1905–12. http://dx.doi.org/10.14233/ajchem.2019.22018.

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Metal complexes having the composition M(Bipy)Cl2 (where, M = Cu(II), Ni(II) and Co(II); Bipy = 2,2-bipyridyl) are reacted with 2-acetylthiophene thiosemicarbazone (ATT) to produce heteroleptic transition metal complexes with molecular formula [M(Bipy)ATT]. The complexes are characterized by mass spectra, molar conductivity, infrared and electronic spectra. Electrochemical behaviour of these metal complexes was investigated by cyclic voltammetric studies. The metal complexes show quasi reversible cyclic voltammetric responses for the Cu(II)/Cu(I) couple. The binding properties of these complex

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28

Lian, Wenhui, Yuanyuan Sun, Binbin Wang, Ning Shan, and Tongshun Shi. "Synthesis and properties of 5,10,15,20-tetra[4-(3,5-dioctoxybenzamidephenyl] porphyrin and its metal complexes." Journal of the Serbian Chemical Society 77, no. 3 (2012): 335–48. http://dx.doi.org/10.2298/jsc110516190l.

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A novel 5,10,15,20-tetra[4-(3,5-dioctoxybenzamide)phenyl]porphyrin and its transition metal complexes are reported in this paper. Their molecular structures were characterized by elemental analysis, IR spectra, 1HNMR spectra and UV-Vis spectra. Their spectroscopic properties were studied by Raman spectra, fluorescence spectra and X-ray photoelectron spectra (XPS). The fluorescence quantum yields have been measured at room temperature. The fluorescence intensity of porphyrin ligand was stronger than that of the complexes. In Raman spectra, there was much difference between porphyrin ligand and

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29

El-Ghamry, Hoda A., Mohamed Gaber, and Thoraya A. Farghaly. "Synthesis, Structural Characterization, Molecular Modeling and DNA Binding Ability of CoII, NiII, CuII, ZnII, PdII and CdII Complexes of Benzocycloheptenone Thiosemicarbazone Ligand." Mini-Reviews in Medicinal Chemistry 19, no. 13 (2019): 1068–79. http://dx.doi.org/10.2174/1389557519666190301143322.

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Background & Objective: Six novel complexes of transition metal namely, [CoLCl2(H2O)2]0.5H2O, [NiLCl2(H2O)2]0.5H2O, [CuLCl2]0.5H2O, [ZnLCl2], [PdLCl2]H2O and [CdLCl2]H2O, where L is benzocycloheptenone thiosemicarbazone ligand, have been obtained. The confirmation of the structures of the obtained metal chelates depends on the different spectral and physicochemical techniques including CHN analysis, infrared spectra, molar conductivity measurement, UV-vis, thermogravimetric analysis and magnetic moment. The infrared spectral results ascertained that the ligand behaved as neutral bidentate

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30

Hush, Noel S., and Jeffrey R. Reimers. "Solvent Effects on the Electronic Spectra of Transition Metal Complexes." Chemical Reviews 100, no. 2 (2000): 775–86. http://dx.doi.org/10.1021/cr980409v.

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31

Santos, P. S., J. H. Amaral, and L. F. C. De Oliveira. "Raman spectra of some transition metal squarate and croconate complexes." Journal of Molecular Structure 243, no. 3-4 (1991): 223–32. http://dx.doi.org/10.1016/0022-2860(91)87041-f.

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32

Sunitha, Matangi, Pragathi Jogi, Bathini Ushaiah, and C. Gyana Kumari. "Synthesis, Characterization and Antimicrobial Activity of Transition Metal Complexes of Schiff Base Ligand Derived from 3-Ethoxy Salicylaldehyde and 2-(2-Aminophenyl) 1-H-benzimidazole." E-Journal of Chemistry 9, no. 4 (2012): 2516–23. http://dx.doi.org/10.1155/2012/287909.

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Metal complexes of Ni(II), Co(II), Cu(II), Mn(II) and Zn(II) VO(IV) with a Schiff base derived from 3-Ethoxy Salicylaldehyde and 2-(2-amino-phenyl)1-H-Benzimidazol(2-[(Z)-{(2-(1H-benzimidazole-2yl)phenyl] imino} methyl]-6-ethoxy phenol-BMEP) were synthesized successfully. The resulting complexes were characterized by elemental analysis, magnetic moment measurements, conductivity measurements, IR, UV-VIS, 1H NMR, mass spectra and ESR spectral studies. According to these data, we propose an octahedral geometry to all the metal complexes. Antimicrobial activity of the ligand and its metal complex

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33

Deshpande, Dr Vilas G. "Study of Metal Complexes with Schiff Base Derived from 2-Amino-4, 6-dimethylbenzothiazole and Pyrrole-2- aldehyde." International Journal for Research in Applied Science and Engineering Technology 9, no. VIII (2021): 931–36. http://dx.doi.org/10.22214/ijraset.2021.37518.

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As it is proved that the transition metal complexes have drug activities, hence we have synthesized heterocyclic Schiff bases. Six complexes of Co(II), Ni(II), Fe(III), Mn(II), Cr(II) and Cu(II) Schiff bases have been prepared. All ligands and its metal complexes the structures of the complexes have been proposed by analytical data, conductivity measurement, magnetic moment, IR, 1H NMR spectra and thermal studies. Analytical data confirmed 1:2 (metal:ligand) stoichiometry and the spectral data suggest that all Fe(III), Mn(II), Cr(II), Ni(II) and Co(II) complexes have octahedral geometry where

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34

M, Swathika, and Arunadevi Natarajan. "Recent Advances in Hydrogen Evolution Reaction Using First-Row Transition Metal Complexes as Catalyst." ECS Transactions 107, no. 1 (2022): 5763–68. http://dx.doi.org/10.1149/10701.5763ecst.

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The precise use of an electrocatalyst for the HER reaction mainly depends on synthesis cost, durability, and over potential. Recently there is promising research for electrocatalyst synthesis using first-row transition metals. Working towards this herein we present synthesis, physio-chemical characterization, and hydrogen evolution activity of amino guanidium metal naphthoate complexes. The obtained electrocatalysts were characterized by element analysis, IR spectra, UV-Visible spectroscopy, TG-DTA, and powder-XRD. The thermal behavior of these compounds has been studied by simultaneous TG-DTA

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DESAI, P. S., and D. V. PAREKH. "Synthesis, Characterization and Biological Screening of Novel Metal(II) Complexes of 2-{[2-(5-Benzoyl-1H-benzotriazol-1-yl)-2-oxoethyl]amino}-5-bromobenzoic Acid." Asian Journal of Chemistry 33, no. 4 (2021): 747–51. http://dx.doi.org/10.14233/ajchem.2021.23073.

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In this work, 5-bromoanthranilic acid was condensed with 1-(5-benzoyl-1H-1,2,3-benzotriazole-1-yl)-2-chloro-ethanone to form 2-{[2- (5-benzoyl-1H-benzotriazol-1-yl)-2-oxoethyl]amino}-5-bromobenzoic acid. The newly synthesized ligand and its metal(II) complexes with first transition metal series (Cu(II), Ni(II), Co(II), Zn(II) and Mn(II)) have been synthesized and characterized by using elemental analysis, infrared and electronic spectra. The IR spectra, NMR spectra and atomic absorption analysis show that the benzotriazole ligand formed chelates with metal in a 2:1 (ligand:metal) stochiometry.

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Kareem, May Joda. "Synthesis, Spectroscopic Study and Biological Activity of new Bidentate Schiff Base (4-(Dimethylamino) Benzylidene)-5-(3,4,5-Trimethoxybenzyl)-5 Pyrimidine-2,4-Diamine) and Transition Metal Mn(II), Ni(II) and Cu(II) Complexes." Pakistan Journal of Medical and Health Sciences 16, no. 5 (2022): 655–59. http://dx.doi.org/10.53350/pjmhs22165655.

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The Schiff bases ligand (L1) was synthesized by condensing (2,4-diamine (Trimethoxybenzyl 3,4,5)-5 pyrimidine) and (4-dimethylamino benzaldehyde). The transition metal complexes of [Mn(L1)2Cl2], [Ni(L1)2Cl2], and [Cu (L1)2Cl2] were then produced. The ligand and its metal complexes Mn(II), Ni(II), and Cu(II) were examined by analyzing the elemental composition, the metal content, the chloride content, and the molar conductance, FT-IR, 1H-NMR, UV-Vis spectra, magnetic susceptibility, mass spectra, and thermal analysis (TGA). The results indicated that the ligand behaves as a bidentate ligand in

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Baklouti, Lassaad. "Novel phthalonitrile derivatives as potential compounds for extraction and complexation of metal cations." JOURNAL OF ADVANCES IN CHEMISTRY 11, no. 10 (2016): 3870–74. http://dx.doi.org/10.24297/jac.v11i10.2185.

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The synthesis and the binding properties of novel phthalonitrile derivatives 1-3 towards metal cations have been described in this paper. The complexation and extraction of some transition and heavy metal cations have been followed by UV-visible spectrophotometry absorption in methanol. The conductivity studies have been used in order to confirm complex’s stoichiometries. The treatment of UV spectra by digital program showed the formation of ML (with ML2 in some cases) (M=metal, L=ligand) species. Beyond the discussion of the stability profiles of complexes particular attention is paid to the

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38

Bridgeman, A. "Spectral intensities of transition metal complexes." Coordination Chemistry Reviews 165, no. 1 (1997): 315–446. http://dx.doi.org/10.1016/s0010-8545(97)00020-9.

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Bridgeman, A. J., and M. Gerloch. "Spectral intensities of transition metal complexes." Coordination Chemistry Reviews 165 (October 1997): 315–446. http://dx.doi.org/10.1016/s0010-8545(97)90163-6.

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Soundaranayaki, V., and A. Kulandaisamy. "Structural and Biological Studies on Transition Metal Complexes of 4-Aminoantipyrine Derivative." Asian Journal of Chemistry 32, no. 11 (2020): 2846–54. http://dx.doi.org/10.14233/ajchem.2020.22866.

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Novel tetra dentate Cu(II), Ni(II), Co(II), VO(II) and Zn(II) Schiff base complexes have been synthesized from salicylidene-4-iminoantipyrine and tyrosine. The synthesized Schiff base complexes was characterized by powder X-ray diffraction studies (XRD), scanning electron microscopy (SEM), FT-IR, ESR, 1H NMR, 13C NMR, UV-vis, molar conductance and magnetic susceptibility measurements. The general formula of complexes was confirmed as [ML] type [M = Cu(II), Co(II), Zn(II), Ni(II) and VO(II); L = C27H24N4O4]. Magnetic susceptibility, IR and UV-vis, spectral data showed that all the complexes hav

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Naeimi, Hossein, and Mohsen Moradian. "Efficient Synthesis and Characterization of Some Novel Nitro-Schiff Bases and Their Complexes of Nickel(II) and Copper(II)." Journal of Chemistry 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/701826.

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Synthesis and characterization of some new Schiff base ligands derived from various diamines and nitrosalicylaldehyde and their complexes of Ni(II) and Cu(II) are reported. Several spectral techniques such as UV-Vis, FT-IR, and NMR spectra were used to identify the chemical structures of the reported ligands and their complexes. The ligands are found to be bound to the metal atom through the oxygen atoms of the hydroxyl groups and nitrogen atoms of imine groups, which is also supported by spectroscopic techniques. The results obtained by FT-IR and NMR showed that the Schiff base complexes of t

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Muhammad Ikram, Muhammad Ikram, Sadia Rehman Sadia Rehman, Muhammad Ayaz Muhammad Ayaz, et al. "Synthesis, Spectral, Thermal and DPPH Scavenging Studies of the Hydrazone Derived Transition Metal Complexes." Journal of the chemical society of pakistan 42, no. 6 (2020): 888. http://dx.doi.org/10.52568/000691.

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Schiff base ligand 2,2-{benzene-1,4-diylbis[(E)methylylidene(1E,2E)hydrazine-2,1-diylidene(E)methylidene]}diphenol (H2-BHMD) was synthesized by reacting together the ortho vaniline and 1,4-bis(hydrazonomethyl)benzene. It was characterized by analytical and spectroscopic techniques including 1H-NMR, elemental analysis, FT-IR, and UV-Visible studies. Different transition metal ions like Co (II), Ni (II), Cu (II) and Zn (II) were reacted with well characterized ligand to obtain the metal derivatives. AAS, elemental analysis, FT-IR, molar conductance and UV-Visible methods were used to study the m

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Muhammad Ikram, Muhammad Ikram, Sadia Rehman Sadia Rehman, Muhammad Ayaz Muhammad Ayaz, et al. "Synthesis, Spectral, Thermal and DPPH Scavenging Studies of the Hydrazone Derived Transition Metal Complexes." Journal of the chemical society of pakistan 42, no. 6 (2020): 888. http://dx.doi.org/10.52568/000691/jcsp/42.06.2020.

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Schiff base ligand 2,2-{benzene-1,4-diylbis[(E)methylylidene(1E,2E)hydrazine-2,1-diylidene(E)methylidene]}diphenol (H2-BHMD) was synthesized by reacting together the ortho vaniline and 1,4-bis(hydrazonomethyl)benzene. It was characterized by analytical and spectroscopic techniques including 1H-NMR, elemental analysis, FT-IR, and UV-Visible studies. Different transition metal ions like Co (II), Ni (II), Cu (II) and Zn (II) were reacted with well characterized ligand to obtain the metal derivatives. AAS, elemental analysis, FT-IR, molar conductance and UV-Visible methods were used to study the m

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44

Abbas, Bayader F., Barakat A. F. Kamel, and Wessal M. Khamais. "Preparation, Diagnosis, Biological Activity, and Theoretical Studies of Some Mixed Drug Complexes." Scientific World Journal 2019 (May 8, 2019): 1–7. http://dx.doi.org/10.1155/2019/8962923.

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This paper includes synthesis and characterization of mixed ligand complexes derived from mefenamic acid and metformin using transition metal ions such as Co(II) and Cu(II). These complexes have been characterized by magnetic susceptibility, molar conductance, TG analyses, and spectral techniques such as FTIR and UV spectra. The theoretical study of the ligands and their complexes using semiempirical (PM6) method was used to measure IR and UV spectroscopy, HOMO-LUMO categories of the ligands. These synthesized complexes are also studied for their biological activities. The studies made on thes

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A. Osunniran, W., J. A. Obaleye, A. C. Tella, Y. O. Ayipo, A. T. Bale, and A. O. Rajee. "Toxicological assessment of synthesized and characterized transition metal(II) complexes of eflornithine hydrochloride hydrate on albino rats." Bulletin of the Chemical Society of Ethiopia 34, no. 3 (2021): 489–500. http://dx.doi.org/10.4314/bcse.v34i3.6.

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Transition metal complexes of Cu(II), Co(II) and Ni(II) with eflornithine hydrochloride hydrate (EFN), an antitrypanosomiasis drug, as ligand have been synthesized and characterized by melting point, elemental analysis, Fourier transform infrared (FTIR), electronic spectra, magnetic susceptibility and electrospray ionization mass spectrometry (ESI-MS). The FTIR spectral data suggested the coordination modes of the ligand to be bidentate, coordinated to the metal ions through its carboxylate oxygen atom and an amino nitrogen atom. From the microanalytical data, the stoichiometry of the metal co

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Awf A.R. Ahmed. "Synthesis and Characterization of Some Metal Complexes of." journal of the college of basic education 22, no. 96 (2022): 49–62. http://dx.doi.org/10.35950/cbej.v22i96.9014.

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A new ligand [4-chloro-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-ylcarb amothioyl) benzamide] (CAP) was synthesized by reaction of P-ChloroBenzoyl isothio cyanate with 4-aminoantipyrine,The ligand was characterized by micro elemental analysis C.H.N.S.,FT-IR,UV-Vis and1H-13CNMR spectra, some transition metals complex of this ligand were prepared and characterized by FT-IR, UV-Vis spectra, conductivity measurements, magnetic susceptibility and atomic absorption. From the obtained results the molecular formula of all prepared complexes were [M(CAP)2(H2O)2]Cl2(M+2 =Mn, Co, Ni, Cu, Zn

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Shari'ati, Yusef, and Josh Vura-Weis. "Polymer thin films as universal substrates for extreme ultraviolet absorption spectroscopy of molecular transition metal complexes." Journal of Synchrotron Radiation 28, no. 6 (2021): 1850–57. http://dx.doi.org/10.1107/s1600577521010596.

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Polystyrene and polyvinyl chloride thin films are explored as sample supports for extreme ultraviolet (XUV) spectroscopy of molecular transition metal complexes. Thin polymer films prepared by slip-coating are flat and smooth, and transmit much more XUV light than silicon nitride windows. Analytes can be directly cast onto the polymer surface or co-deposited within it. The M-edge XANES spectra (40–90 eV) of eight archetypal transition metal complexes (M = Mn, Fe, Co, Ni) are presented to demonstrate the versatility of this method. The films are suitable for pump/probe transient absorption spec

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Pavlov, Alexander A., Valentin V. Novikov, Igor A. Nikovskiy, Elizaveta K. Melnikova, Yulia V. Nelyubina, and Dmitry Y. Aleshin. "Analysis of reduced paramagnetic shifts as an effective tool in NMR spectroscopy." Physical Chemistry Chemical Physics 24, no. 2 (2022): 1167–73. http://dx.doi.org/10.1039/d1cp04648a.

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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.

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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

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Anitha, C., C. D. Sheela, P. Tharmaraj, and R. Shanmugakala. "Studies on Synthesis and Spectral Characterization of Some Transition Metal Complexes of Azo-Azomethine Derivative of Diaminomaleonitrile." International Journal of Inorganic Chemistry 2013 (January 16, 2013): 1–10. http://dx.doi.org/10.1155/2013/436275.

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New complexes of 2,3-bis(5-(4-chlorophenyl)diazenyl)-2-hydroxybenzylideneamino)maleonitrile (CDHBDMN) with VO(II), Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) were synthesized and characterized by analytical and physicochemical techniques, that is, elemental analyses, molar conductivity, UV, IR, EPR, 1H-NMR spectra, magnetic susceptibility and also by aid of scanning electron microscopy (SEM), nonlinear optical study (NLO), fluorescence spectral studies, and solvatochromic behaviors. Electronic and magnetic susceptibility measurements of the complexes indicate square pyramidal geometry for VO(I

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