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Journal articles on the topic 'Transition metal complexes; Hydrazine; Diazene'

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Published: 4 June 2021

Last updated: 11 February 2022

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1

Sellmann, Dieter, and Michael Waeber. "Übergangsmetallkomplexe mit Schwefelliganden, XVIII. Synthese und Reaktionen von [Ru(L)(PPh3)dttd]-Komplexen mit kleinen Stickstoffverbindungen L = NH3, N2H4, N2H3CH3, N2H3C6H5 sowie NO+ (dttd2- = 2,3;8,9-Dibenzo-1,4,7,10-tetrathiadecan (–2))/ Transition Metal Complexes with Sulfur Ligands, XVIII. Synthesis and Reactions of [Ru(L)(PPh3)dttd] Complexes with Small Nitrogen Compounds L = NH3, N2H4, N2H3CH3, N2H3C6H5 and NO+ (dttd2- = 2,3;8,9-Dibenzo-1,4,7,10-tetrathiadecane (–2))." Zeitschrift für Naturforschung B 41, no. 7 (1986): 877–84. http://dx.doi.org/10.1515/znb-1986-0714.

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Abstract Reaktionen von [Ru(L)(PPh3)dttd]-Komplexen mit kleinen Stickstoffverbindungen L = NH3, N2H4, N2H3CH3, N2H3C6H5 sowie NO+ (dttd2-= 2,3;8,9-Dibenzo-l,4,7,10-tetrathiadecan (—2)) Transition Metal Complexes with Sulfur Ligands, XVIII* Synthesis and Reactions of [R u(L)(PPh3)dttd] Complexes with Small Nitrogen Com pounds L = N H 3, N2H 4, N2H 3C H 3, N2H 3C6H 5 and N O + (dttd2-= 2,3;8,9-D ibenzo-l,4,7,10-tetrathiadecane (—2)) D ieter Sellmann+ Ruthenium Sulfur C om plexes, N itrogen Ligands The com plex fragment [Ru(PPh3)dttd], (dttd2-= 2,3;8,9-dibenzo-l,4,7,10-tetrath iad ecane (— 2)), c

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2

Sellmann, Dieter, Joachim Kaeppler, Matthias Moll, and Falk Knoch. "Transition metal complexes with sulfur ligands. 95. Diazene, hydrazine, ammine and azido complexes with sulfur dominated [Ru(PPh3)('buS4')] fragments ('buS4'2- = 1,2-bis(2-mercapto-3,5-di-tert-butylphenylthio)ethanato(2-))." Inorganic Chemistry 32, no. 6 (1993): 960–64. http://dx.doi.org/10.1021/ic00058a035.

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3

El-Sonbati, Adel Z., El-Sayed M. Mabrouk, and Helmy E. Megahed. "Fluorenone hydrazine-S-benzyldithiocarbazate transition metal complexes." Transition Metal Chemistry 16, no. 2 (1991): 280–84. http://dx.doi.org/10.1007/bf01032853.

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4

Anitha, C., S. Sumathi, P. Tharmaraj, and C. D. Sheela. "Synthesis, Characterization, and Biological Activity of Some Transition Metal Complexes Derived from Novel Hydrazone Azo Schiff Base Ligand." International Journal of Inorganic Chemistry 2011 (January 24, 2011): 1–8. http://dx.doi.org/10.1155/2011/493942.

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A series of metal(II) complexes ML where M = VO(II), Co(II), Ni(II), Cu(II), and Zn(II) have been synthesized from azo Schiff base ligand (N′E)-N′-(5-((4-chlorophenyl)diazenyl)-2-hydroxybenzylidene)-2-hydroxybenzohydrazide and characterized on the basis of elemental analyses, electronic, IR, and 1H NMR spectra, magnetic susceptibility and also by aid of scanning electron microscopy (SEM), X-ray powder diffraction, fluorescence spectral studies, and molar conductivity measurements. Conductivity measurements reveal that the complexes are nonelectrolytes. Spectroscopy and other analytical studies

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5

Heaton, Brian T., Chacko Jacob, and Philip Page. "Transition metal complexes containing hydrazine and substituted hydrazines." Coordination Chemistry Reviews 154 (September 1996): 193–229. http://dx.doi.org/10.1016/0010-8545(96)01285-4.

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6

Dey, Kamalendu, Debasish Bandyopandhyay, and George B. Kauffman. "ChemInform Abstract: Transition-Metal Complexes of Thioderivatives of Hydrazine." ChemInform 31, no. 31 (2010): no. http://dx.doi.org/10.1002/chin.200031259.

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7

HEATON, B. T., C. JACOB, and P. PAGE. "ChemInform Abstract: Transition-Metal Complexes Containing Hydrazine and Substituted Hydrazines." ChemInform 27, no. 52 (2010): no. http://dx.doi.org/10.1002/chin.199652323.

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8

Kisch, H., C. Krüger, H. E. Marcolin, and A. X. Trautwein. "Übergangsmetallkomplexe von Diazenen, XXIII [1]. Struktur und Mößbauer-Daten bi- und tricyclischer Ferracyclen / Transition Metal Complexes of Diazenes, XXIII [1] Structure and Mößbauer Data of Bi- and Tricyclic Ferracycles." Zeitschrift für Naturforschung B 42, no. 11 (1987): 1435–40. http://dx.doi.org/10.1515/znb-1987-1111.

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Mößbauer spectra of mono and dinuclear iron carbonyl complexes of three cyclic diazenes and the crystal structures of two products formed from (cis-diazene)Fe2(CO)6 and alkynes are reported. The ring size of the diazene ligand influences the stereochemistry of the cycloadducts obtained in the latter reaction; the bicyclic diazaferracycloalkene skeleton of these compounds leads to an exo- and endo-arrangement of one iron carbonyl group relative to the five- and six- membered diazene, rcspectively.

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9

Kuppusamy, K., and S. Govindarajan. "Benzoate Complexes of Dipositive First Row Transition Metal Ions with Hydrazine." Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry 26, no. 2 (1996): 225–43. http://dx.doi.org/10.1080/00945719608004260.

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10

Sun, Peipei, Shuzhen Liu, Shufen Li, Limei Zhang, Hui Sun, and Dingxian Jia. "Hydrazine-Assisted Syntheses and Properties of Mercury Tellurides Containing Transition-Metal Complexes." Inorganic Chemistry 56, no. 11 (2017): 6152–62. http://dx.doi.org/10.1021/acs.inorgchem.7b00115.

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11

Premkumar, T., and S. Govindarajan. "Transition metal complexes of pyrazinecarboxylic acids with neutral hydrazine as a ligand." Journal of Thermal Analysis and Calorimetry 79, no. 1 (2005): 115–21. http://dx.doi.org/10.1007/s10973-004-0571-8.

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12

Wang, Baochen, and Xueqiang Cao. "Anodic oxidation of hydrazine on glassy carbon modified by macrocyclic transition metal complexes." Journal of Electroanalytical Chemistry and Interfacial Electrochemistry 309, no. 1-2 (1991): 147–58. http://dx.doi.org/10.1016/0022-0728(91)87010-2.

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13

Arunadevi, N., and S. Vairam. "3-Hydroxy-2-naphthoate Complexes of Transition Metals with Hydrazine - Preparation, Spectroscopic and Thermal Studies." E-Journal of Chemistry 6, s1 (2009): S413—S421. http://dx.doi.org/10.1155/2009/937216.

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Reaction of hydrazine and 3-hydroxy-2-naphthoic acid with some transition metal ions forms two types of complexes: (i) [M(N2H4){C10H6(3-O)(2-COO)(H2O)2] where M=Ni, Co, Cd and Zn, at pH 9 and (ii) [M(N2H5)2{C10H6(3-O)(2-COO)}2].xH2O where M=Ni & x =1; M=Co, Cd, Mn & x=3; and M=Zn, Cu & x =0 at pH 4. Analytical data confirms the compositions of the complexes. The acid shows dianionic nature in these complexes. The magnetic moments and electronic spectra suggest the geometry of the complexes. IR data indicates the nature of hydrazine and presence of water in the complexes. Simultaneo

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14

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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15

Yasodhai, S., T. Sivakumar, and S. Govindarajan. "Preparation, characterisation and thermal reactivity of transition metal complexes of hydrazine with citric acid." Thermochimica Acta 338, no. 1-2 (1999): 57–65. http://dx.doi.org/10.1016/s0040-6031(99)00192-6.

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16

Bai, E. Helen Pricilla, and S. Vairam. "Spectral and Thermal Studies of Transition Metal Complexes of Acetamido Benzoic Acids with Hydrazine." Asian Journal of Chemistry 25, no. 1 (2013): 209–16. http://dx.doi.org/10.14233/ajchem.2013.12895.

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17

Vairam, S., T. Premkumar, and S. Govindarajan. "Preparation and thermal behaviour of divalent transition metal complexes of pyromellitic acid with hydrazine." Journal of Thermal Analysis and Calorimetry 101, no. 3 (2009): 979–85. http://dx.doi.org/10.1007/s10973-009-0433-5.

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18

Sellmann, Dieter, Bernd Seubert, Falk Knoch, and Matthias Moll. "Übergangsmetallkomplexe mit Schwefelliganden, LXX. / Transition Metal Complexes with Sulfur Ligands, LXX." Zeitschrift für Naturforschung B 46, no. 11 (1991): 1449–58. http://dx.doi.org/10.1515/znb-1991-1102.

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In order to study specific properties of transition metal sulfur complexes, reactions of [Mo(NO)2(′S4′)] (1) with nucleophiles were investigated. With sodiumborohydride or hydrazine, 1 yields the hydroxylaminyl complex [Mo(η2-NH2O)(NO)(′S4′)] (2). 2 crystallizes from DMF as 2 · DMF whose molecular structure was determined by X-ray structure analysis (P21/c, Z = 4, a = 1204.4(3), b = 1579.7(4), c = 1253.0(4) pm, β = 117.44(2)°, R = 0,056, Rw = 0,040). The Mo centre is coordinated by two trans thiolato S, two cis thioether S atoms, the co-ligand NO and side-on NH2O in a distorted pentagonal bipy

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19

R, Manimekalai, Kalpanadevi K, Anjutha Prabha N, and Raina O. "SYNTHESIS, CHARACTERIZATION AND ANTIBACTERIAL STUDIES ON DIVALENT TRANSITION METAL COMPLEXES OF HYDRAZINE WITH ARYL SUBSTITUTED ACETIC ACIDS." Kongunadu Research Journal 2, no. 1 (2015): 18–23. http://dx.doi.org/10.26524/krj59.

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Metal phenylacetate Sesquihydrazinate hydrates of the formula M(PhAc)2.1.5N2H4.H2O where M=Co,Ni or Cd and Metal phenoxyacetate Sesquihydrazinate hydrates M(PhOAc)2.1.5N2H4.H2O Where M=Co, Ni , Cd or Mn have been prepared and characterized by analytical, IR spectral and thermal studies. The composition of complexes have been determined by analytical studies. Infrared spectral data indicate that the bidentate bridging by hydrazine molecules and monodentate coordination by carboxylate ions to the cental metal ion. Thermogravimetry (TG) and differential thermal analyses (DTA) in air have been use

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20

Ashma, A., A. Sudha, S. L. Ashok Kumar, G. Sasikumar, and S. J. Askar Ali. "One Pot Synthesis of Schiff Base Complexes of Cu(II), Zn(II), Ni(II), Co(II) and their Cytotoxicity, Molecular Docking and Antibacterial Activity." Asian Journal of Chemistry 32, no. 10 (2020): 2507–14. http://dx.doi.org/10.14233/ajchem.2020.

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A novel Schiff base ligand (L), N(4)-cyclohexyl-2-(1-(5-chlorothiophen-2-yl)ethylidene)hydrazine carbothioamide was synthesized from isothiocyanatocyclohexane and hydrazine. All the synthesized transition metal(II) complexes were characterized by functional peak using 1H NMR, 13C NMR, FT-IR, UV-vis spectroscopy and metal complex atomic ratio of complexes of thiosemicarbazones were characterized by elemental analysis. Schiff base and its metal(II) complexes were screened in vitro medicinal drug activity against Gram positive and Gram-negative microorganisms and anti-cancer activity against huma

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21

Kisch, Horst. "Transition Metal Complexes of Diazenes, XL [1] Iron Carbonyl Assisted Formation of Bicyclic 1,2-Dihydropyrazol-3-ones from Pyrazolines and Alkynes." Zeitschrift für Naturforschung B 52, no. 8 (1997): 994–96. http://dx.doi.org/10.1515/znb-1997-0820.

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The oxidative degradation of a tricyclic dicarbonyl iron complex substituted at the diazaferrole ring by ester groups ( 1b ) does not lead to a bicyclic 1,2,3-diazepinone derivative, as reported recently for the case of the phenyl substituted compound (1a ), but affords the bicyclic 4-stilbenyl-1,2-dihydropyrazol-3-one 2b as shown by X-ray structural analysis. Since 1b is obtained by reaction of two different alkynes with a hexacarbonyldiiron complex of the cyclic 1,2-diazene, the over-all reaction formally consists of the addition of CO and two alkyne molecules to an N = N function affording

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22

Gad, A. M., A. El-Dissouky, and W. Abdel-Alim. "Thermal stability of poly(methacryloyl hydrazine) derivatives and their complexes with some transition metal chlorides." Polymer Degradation and Stability 50, no. 2 (1995): 163–67. http://dx.doi.org/10.1016/0141-3910(95)00141-7.

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23

Kumar, K., and S. Murugesan. "Synthesis, characterization and anti-bacterial activity of divalent transition metal complexes of hydrazine and trimesic acid." Journal of Saudi Chemical Society 22, no. 1 (2018): 16–26. http://dx.doi.org/10.1016/j.jscs.2017.05.012.

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24

Mohanapriya, S., Muthukumaran Muthukumaran, and S. Vairam. "Synthesis, characterization, thermal behavior and antimicrobial activity of 3-methyl benzoate complexes of transition metal with hydrazine." Bulletin of the Chemical Society of Ethiopia 30, no. 2 (2016): 241. http://dx.doi.org/10.4314/bcse.v30i2.8.

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25

Rani, Anita, Manoj Kumar, Hardeep Singh Tuli, Zahoor Abbas, and Vinit Prakash. "Synthesis and Spectral Studies of 4,4′-(Hydrazine-1,2-diylidenedimethylylidene)-bis-(2- methoxyphenol) and Its Transition Metal Complexes with Promising Biological Activities." Asian Journal of Chemistry 32, no. 7 (2020): 1768–72. http://dx.doi.org/10.14233/ajchem.2020.22703.

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The study describes the synthesis, characterization and biological activity of a novel Schiff base ligand and its transition metal complexes. The Schiff base ligand was obtained by a condensation reaction between 4-hydroxy-3-methoxybenzaldehyde (p-vanillin) and hydrazine hydrate using ethanol as solvent. A new series of Ni(II) and Fe(III) complexes were also derived by reaction of prepared Schiff base ligand with NiCl2 and FeCl3. Both the ligand and its metal complexes were characterized by solubility, melting point and elemental analysis. These compounds were further identified by analytical

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26

El-Sonbati, Adel Z. "Polymer Complexes XVIII. Polychelates from Poly(5-Vinyl Salicylidene Hydrazine-S-benzyl Dithiocarbazate) with Some Transition Metal Salts." Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry 21, no. 2 (1991): 203–16. http://dx.doi.org/10.1080/15533179108020176.

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27

Mendu, Padmaja, J. Pragathi, B. Anupama, and C. Gyana Kumari. "Synthesis, Spectral Characterization, Molecular Modeling, and Antimicrobial Studies of Cu(II), Ni(II), Co(II), Mn(II), and Zn(II) Complexes of ONO Schiff Base." E-Journal of Chemistry 9, no. 4 (2012): 2145–54. http://dx.doi.org/10.1155/2012/839789.

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A series of Cu(II), Ni(II), Co(II), Mn(II), and Zn(II) complexes have been synthesized from the schiff base ligand L. The schiff base ligand [(4-oxo-4H-chromen-3-yl) methylene] benzohydrazide (L) has been synthesized by the reaction between chromone-3-carbaldehyde and benzoyl hydrazine. The nature of bonding and geometry of the transition metal complexes as well as schiff base ligand L have been deduced from elemental analysis, FT-IR, UV-Vis,1HNMR, ESR spectral studies, mass, thermal (TGA and DTA) analysis, magnetic susceptibility, and molar conductance measurements. Cu(II), Ni(II), Co(II), an

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28

Abou Melha, Khlood S., Gamil A. Al-Hazmi, Ismail Althagafi, et al. "Spectral, Molecular Modeling, and Biological Activity Studies on New Schiff’s Base of Acenaphthaquinone Transition Metal Complexes." Bioinorganic Chemistry and Applications 2021 (March 22, 2021): 1–17. http://dx.doi.org/10.1155/2021/6674394.

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The newly synthesized Schiff’s base derivative, N-allyl-2-(2-oxoacenaphthylen-1(2H)-ylidene)hydrazine-1-carbothioamide, has been characterized by different spectral techniques. Its reaction with Co(II), Ni(II), and Zn(II) acetate led to the formation of 1 : 1 (M:L) complexes. The IR and NMR spectral data revealed keto-thione form for the free ligand. On chelation with Co(II) and Ni(II), it behaved as mononegative and neutral tridentate via O, N1, and S donors, respectively, while it showed neutral bidentate mode via O and N1 atoms with Zn(II). The electronic spectra indicated that all the isol

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29

Sellmann, Dieter, Nicole Blum та Frank W. Heinemann. "Transition Metal Complexes with Sulphur Ligands, Part 151 [1]. Ligand Enforced Configurations and Low-Spin States of [FeNS4] Cores in [FeII(L)('pyS4')] Complexes with σ and σ-π Ligands (L = N2H4, pyridine, PMe3, PnPr3; 'pyS4'2- = 2,6-bis(2-mercaptophenylthiomethyl)pyridine (2-))". Zeitschrift für Naturforschung B 56, № 7 (2001): 581–88. http://dx.doi.org/10.1515/znb-2001-0704.

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The reactions of [Fe('pyS4')]2 with PMe3 , PnPr3 , N2H4 and pyridine afforded mononuclear [Fe(L)('pyS4')] complexes with L = PMe3 ( 1 ), PnPr3 (2 ), N2H4 (3) and pyridine (4). NMR spectroscopy, magnetic measurements and X-ray structure determinations revealed that all complexes exhibit frans-thiolate donors and low-spin FeII centres, irrespective of the σ-π or σ ligand character of L. In this regard, the properties of [Fe(L)('pyS4')] complexes strongly contrast with those of [Fe(L)('NHS4')] complexes ('NHS4'2- = 2 ,2 '-bis(2 -mercaptophenylthio)- diethylamine(2 -)) and indicate that the rigid

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30

Bhattacharya, Papri, Demyan E. Prokopchuk, and Michael T. Mock. "Exploring the role of pendant amines in transition metal complexes for the reduction of N2 to hydrazine and ammonia." Coordination Chemistry Reviews 334 (March 2017): 67–83. http://dx.doi.org/10.1016/j.ccr.2016.07.005.

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31

Sellmann, Dieter, Helge Friedrich, Falk Knoch, and Matthias Moll. "Übergangsmetallkomplexe mit Schwefelliganden, C*. Unerwartet einfache Bildung von Diazen-Komplexen und ein neuer Typ von Diastereomerie: [µ-N2H2{Fe(PPr3)('S4')}2] und analoge Komplexe mit [FeS]-Zentren. ( 'S4'2-= 1,2-Bis(2-mercaptophenylthio)ethan(2-)) / Transition Metal Complexes with Sulfur Ligands, C*. Unexpectedly Facile Formation of Diazene Complexes and a New Type of Diastereomerism: [µ-N2H2{Fe(PPr3)('S4')}2] and Analogous Complexes with [FeS]-Centers. ('S4'2- = 1,2-Bis(2-mercaptophenylthio)ethane(2-))." Zeitschrift für Naturforschung B 49, no. 1 (1994): 76–88. http://dx.doi.org/10.1515/znb-1994-0115.

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Abstract Single pot reactions of FeCl2∙4H2O with the tetradentate thioether-thiol 'S4-H2' = 1,2-bis(2-mercaptophenylthio)ethane, phosphines such as PEt3, PPr3 or PBu3, and a ca. 40-fold excess of N2H4∙H2O yield, in the presence of air, diazene complexes of the general formula [µ-N2H2{Fe(PR3)('S4')}2]. In contrast to previous syntheses of diazene complexes, the yields can excel 80%, and the syntheses can be carried out on a 10 g scale. [µ-N2H2{Fe(PPr3)('S4')}2], 1 and [µ-N2H2{Fe(PEt3)('buS4')}2], 2 were characterized by X-ray structure analysis. 2 contains 'buS4'2−= 1,2-bis(3,5-ditertiarybutyl-

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32

Leovac, Vukadin, Ljiljana Vojinovic, Katalin Mesaros-Secenji, and Valerija Cesljevic. "Transition metal complexes with thiosemicarbazide-based ligands, part 46: Synthesis and physico-chemical characterization of mixed ligand cobalt(III)-complexes with salicylaldehyde semi-, thiosemi- an." Journal of the Serbian Chemical Society 68, no. 12 (2003): 919–27. http://dx.doi.org/10.2298/jsc0312919l.

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Mixed ligand octahedral cobalt(III) complexes with the tridentate salicylaldehyde semi-, thiosemi- and isothiosemicarbazone and pyridine of general formula [CoIII(L1-3)(py)3]X(H2L1=salicylaldehyde semicarbazone X=[CIICl3(py)]-, ClO4-.H2O, I-. 0.5 I2; H2L2=salicylaldehyde thiosemicarbazone, X=[CoIICl3(py)]-, CoIIBr3(py)]-, ClO4-. H2O, I3-; H2L3 = salicylaldehyde S-methylisothiosemicarbazone, X=[CoIIBr3(py)]-, ClO4-. H2O, BF4-) were synthesized. The tridentate coordination of all the three dianionic forms of the ligands involves the phenol oxygen, hydrazine nitrogen and the chalcogen (O or S) in

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33

Avar, G., W. Rüsseler, and H. Kisch. "Übergangsmetallkomplexe von Diazenen, XXIV [1]. Komplexierung und N=N-Spaltung von Diazenen durch Dicarbonylbis(cyclopentadienyl)titan / Transition Metal Complexes of Diazenes, XXIV [1] Complexation and N = N-Cleavage of Diazenes by Dicarbonylbis(cyclopentadienyl)titanium." Zeitschrift für Naturforschung B 42, no. 11 (1987): 1441–46. http://dx.doi.org/10.1515/znb-1987-1112.

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Reaction of Cp2Ti(CO)2, Cp=h5-C5H5, with the 1,2-diazenes ROCN = NCOR (R = EtO (1a), tert-BuO (1b), p-MeC6H4O (1c), p-MeC6H4 (1d)) in the molar ratio of 1:1 yiclds five- membered metallacycles 2 by formal 1,4-addition of 1 to the Cp2Ti fragment. When a two-fold excess of Cp2Ti(CO)2 is employed, the initially formed 2 reacts further by N = N-cleavage to give Cp2Ti(NCO)(OR), Cp2Ti(NCO)2 and Cp2Ti(OR)2 resp., in the case of 1a-1c. The bis(p-methyl- benzoyI)diazene (1d) does not afford analogous cleavage products. Dimethyl- and pentamethy- lenediazirine also react by cleavage of the N = N-bond to

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34

Mohapatra, Ranjan K., V. P. Saikishore, Mohammad Azam, and Susanta K. Biswal. "Synthesis and physicochemical studies of a series of mixed-ligand transition metal complexes and their molecular docking investigations against Coronavirus main protease." Open Chemistry 18, no. 1 (2020): 1495–506. http://dx.doi.org/10.1515/chem-2020-0190.

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AbstractA novel series of mixed-ligand complexes of the type, [M(L1)(L2)Cl]·2H2O [L1 = 2-(α-methyl salicylidene hydrazine) benzimidazole (primary ligand), L2 = 2,2′-bipyridine (bipy; secondary ligand), M = Co(ii), Ni(ii), Cu(ii) and Zn(ii)], were based on the physicoanalytical studies. The spectroscopic findings revealed tridentate nature of the Schiff base ligand (L1) and its coordination to the metal ions via azomethine nitrogen, ring nitrogen and the deprotonated phenolic oxygen atoms. Furthermore, the synthesized compounds were evaluated for antimicrobial activity against Bacillus subtilis

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35

El-bindary, A. A. "Thermodynamics of substituted coumarin VII: Potentiometric and spectrophotometric studies of 1-acetyl-2-(coumarin-iminecarboxamide-3-yl) hydrazine transition metal complexes." Spectroscopy Letters 32, no. 3 (1999): 383–95. http://dx.doi.org/10.1080/00387019909349992.

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Ravoof, Thahira B. S. A., Karen A. Crouse, M. Ibrahim M. Tahir, Fiona N. F. How, Rozita Rosli, and David J. Watkins. "Synthesis, characterization and biological activities of 3-methylbenzyl 2-(6-methyl pyridin-2-ylmethylene)hydrazine carbodithioate and its transition metal complexes." Transition Metal Chemistry 35, no. 7 (2010): 871–76. http://dx.doi.org/10.1007/s11243-010-9406-6.

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37

Sellmann, Dieter, Wolfgang Soglowek, and Matthias Moll. "Übergangsmetallkomplexe mit Schwefelliganden, XCl+ Fell-Komplexe des fünfzähnigen Thioether-Thiolat-Aminliganden ′buNHS4′-H2: Synthese, Charakterisierung, Reaktivität und Stereochemie (′buNHS4′-H2 = 2,2′-Bis(2-mercapto-3,5-di-tertiärbutyl-phenylthio)diethylamin) / Transition Metal Complexes with Sulfur Ligands, XCI+ Fell Complexes of the Pentadentate Thioether-Thiolate-Amine Ligand ′buNHS4′-H2: Synthesis, Characterization, Reactivity and Stereochemistry (′buNHS4′-H2 = 2,2′-Bis(2-mercapto-3,5-di-tertiarybutyl-phenylthio)diethylamine)." Zeitschrift für Naturforschung B 47, no. 8 (1992): 1105–14. http://dx.doi.org/10.1515/znb-1992-0809.

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In search of model compounds for the active centers of nitrogenases, [Fe(L)(′buNHS4')] complexes of the pentadentate thioether-thiolate-amine ligand ′buNHS4'2- (′buNHS4'-H2 = 2,2′-bis(2-mercapto-3,5-di-tertiarybutyl-phenylthio)diethylamine) were obtained.Alkylation of′buS2'-H2 with (BrC2H4)2NH yielded the new ligand ′buNHS4'-H2 as a mixture of positional isomers. Isolation of single isomers was achieved by reacting the mixture with FecL2•4H2O and CO in order to give the corresponding [Fe(CO)] complexes which were separated and hydrolyzed to yield the free ligands.Reaction of'buNHS4'-H2 with Fe

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38

Mamour, Sarr, Diop Mayoro, Thiam Elhadj Ibrahima, Gaye Mohamed, Barry Aliou Hamady та Javier Ellena. "{1-[1-(2-Hydroxyphenyl)ethylidene]-2-(pyridin-2-yl-κN)hydrazine-κ2 N′,O}{1-[1-(2-oxidophenyl)ethylidene]-2-(pyridin-2-yl-κN)hydrazine-κ2 N′,O}nickelate(II) nitrate hemihydrate". Acta Crystallographica Section E Crystallographic Communications 74, № 5 (2018): 642–45. http://dx.doi.org/10.1107/s2056989018005261.

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The 2-hydrazinopyridine precursor has been widely used to prepare ligands of various kinds by condensation with carbonyl compounds. These types of ligands are suitable for synthesizing novel transition metal (II) complexes with interesting magnetic properties. In this context we have synthesized the ligand 1-(2-hydroxyphenyl-2-ethylidene)-2-(pyridin-2-yl)hydrazine (HL) which was used in the preparation of the mononuclear title complex, [Ni(C13H12N3O)(C13H13N3O)]NO3·0.5H2O. As a result of the presence of HL and L in the [{Ni(HL)(L)}]+ unit, the complex appears to be a supramolecular dimer compo

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39

Sellmann, Dieter, Franz Grasser, Falk Knoch, and Matthias Moll. "Übergangsmetallkomplexe mit Schwefelliganden, LXXX. Synthese, Struktur, Oxotransfer- und redoxgekoppelte Kondensationsreaktionen von Molybdän-Oxo-Komplexen mit dem sterisch anspruchsvollen vierzähnigen Thioether-Thiolat-Liganden 'buS4'2- ('buS4'2- = 1,2-Bis(2-mercapto-3,5-di-t-butylphenylthio)ethan(2—))/Transition Metal Complexes with Sulfur Ligands, LXXX. Syntheses, Structures, Oxo Transfer and Redox Coupled Condensation Reactions of Molybdenum Oxo Complexes with the Sterically Demanding Tetradentate Thioether-Thiolato-Ligand 'buS4'2- ('buS4'2- = 1,2-Bis(2-mercapto-3,5-di-/-butylphenylthio)ethane(2—))." Zeitschrift für Naturforschung B 47, no. 1 (1992): 61–73. http://dx.doi.org/10.1515/znb-1992-0114.

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In order to obtain soluble molybdenum sulfur oxo complexes, [Mo(O)2('buS4')] (1) ('buS4'2- = 1,2-bis(2-mercapto-3,5-di-t-butylphenylthio)ethane(2-)) was synthesized by reaction of [Mo(O)2(acac)2] (acac- = acetylacetonate(1-) ) with 'buS4'-Li2. Treatment of 1 with PPh3 yielded [μ-O{Mo(O)('buS4')}2] (2) and OPPh3 in an oxo transfer reaction. [Mo(PMe3)2('buS2')2] (3) ('buS2'2- = 3,5-di-t-butyl-1,2 -benzenedithiolate(2-)) was obtained by twofold desoxygenation of 1 with excess PMe3 via a redox coupled addition elimination reaction. 2 reacts with the oxo group donor DMSO to yield 1 and Me2S. The sy

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Sellmann, Dieter, Christine Rohm, and Matthias Moll. "UbergangsmetalIkomplexe mit Schwefelliganden, CXV+. Protonierung und Alkylierung der Thiolatdonoren von Ru(II)-Komplexen mit [Ru(′buS5′)]-Fragmenten (′buS5–H2 = 2,2′-Bis(2-mercapto-3,5-di-t-butylphenylthio)diethylsu!fid)/Transition Metal Complexes with Sulfur Ligands, CXV+. Protonation and Alkylation of Thiolate Donors in Ru(II) Complexes with [Ru(′buS5′)] Fragments (′buS5′–H2 = 2,2′-Bis(2-mercapto-3,5-di-t-butylphenylthio)diethylsulfide)." Zeitschrift für Naturforschung B 50, no. 11 (1995): 1729–38. http://dx.doi.org/10.1515/znb-1995-1121.

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Reaction of meso-[Ru(L)(′buS5′)] complexes (L = CO (1), PPh3, PCy3) with one equivalent of oxonium salts R3OBF4 (R = CH3, C2H5) yields the C1 symmetrical monoalkyl derivatives [Ru(L)(′buS5′-R)]BF4 (L = CO, R = CH3 (2), C2H5 (3); L = PPh3, R = CH3 (5); L = PCy3, R = CH3 (6)), in which one of the thiolate donors of the starting complexes is alkylated diastereospecifically. Monoalkylation of the binuclear complex [Ru(′buS5′)]2 leads to C1 symmetrical [Ru(′buS5′-CH3)]2(BF4)2 (7) which gives the hydrazine complex [μ-N2H4{Ru(′buS5′-CH3)}2](BF4)2·N2H4 (9) upon reaction with N2H4.Reaction of 1 with 1.

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Sellmann, Dieter, David C. F. Blum та Frank W. Heinemann. "Transition metal complexes with sulfur ligands. Part CLV.11For Part CLIV see Ref. [1], Eur. J. Inorg. Chem., in press. Structural and spectroscopic characterization of hydrogen bridge diastereomers of [μ-N2H2{Fe(PR3)(‘tpS4’)}2] diazene complexes (‘tpS4’2−=1,2-bis(2-mercaptophenylthio)phenylene(2−))". Inorganica Chimica Acta 337 (вересень 2002): 1–10. http://dx.doi.org/10.1016/s0020-1693(02)00987-8.

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42

Zhang, Xue-Li, Ding-Wa Zhang, Hui-Jiao Zhang, Shi-Ni He, and Yao-Ting Chen. "Synthesis Soluble Non-Ion Transition Metal Manganese(II), Cobalt(II), Nickel(II) Complexes of Diethylenetriamine-N,N′,N″-tri(acetyl-p-hydroxybenzoyl hydrazine)- N,N″- Bisacetic Acid as Potential Contrast Enhancement Agent." Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry 45, no. 3 (2014): 346–49. http://dx.doi.org/10.1080/15533174.2013.831895.

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43

Sellmann, Dieter, Herbert Kunstmann, Falk Knoch, and Matthias Moll. "Transition-metal complexes with sulfur ligands. Part 37. Iron, molybdenum, and ruthenium complexes with pentadentate OS4 and NHS4 ligands combining thiolato, thioether, and ether or amine donor functions: synthesis, structures, and reactivity of carbon monoxide, nitric oxide, trimethylphosphine and hydrazine derivatives." Inorganic Chemistry 27, no. 23 (1988): 4183–90. http://dx.doi.org/10.1021/ic00296a019.

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44

Sellmann, Dieter, Andreas Hennige та Frank W. Heinemann. "Transition metal complexes with sulfur ligands part CXXIX. Retention and reactivity of the [FeNHNHFe] chromophore in the iron sulfur diazene complex [μ-N2H2{Fe(PPr3)(‘S4’)}2] in exchange and oxidation processes. (‘S4’2− = 1,2-bis (2-mercaptophenylthio)ethane(2−))". Inorganica Chimica Acta 280, № 1-2 (1998): 39–49. http://dx.doi.org/10.1016/s0020-1693(98)00051-6.

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45

"Synthesis, Characterization and Biological Activity of Transition Metal Complexes of [1-(2-bromo, 5-methoxy benzylidene) hydrazine] Ligand." Letters in Applied NanoBioScience 10, no. 2 (2020): 2056–62. http://dx.doi.org/10.33263/lianbs102.20562062.

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A series of metal complexes was synthesized from the novel Schiff base [1-(2-bromo-5-methoxybenzylidene)-hydrazine] ligand. The ligand and metal complexes were well characterized by spectroscopic methods. The ligand was found to be monodentate. Stoichiometry of the ligand to metal ions was confirmed to be 4:1. Furthermore, the synthesized metal complexes were screened for antimicrobial, antitubercular, and antimalarial activities, which revealed that Cu (II) and Zn (II) showed excellent antimicrobial activity, Ni (II) was active against M. Tuberculosis, and Cd (II) showed excellent antimalaria

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46

Nurdin, Lucie, Yan Yang, Peter G. N. Neate, et al. "Activation of ammonia and hydrazine by electron rich Fe(ii) complexes supported by a dianionic pentadentate ligand platform through a common terminal Fe(iii) amido intermediate." Chemical Science, 2021. http://dx.doi.org/10.1039/d0sc06466a.

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Synopsis: a highly reactive Fe(iii)–NH<sub>2</sub> complex is generated via activation of ammonia or hydrazine in reactions of relevance to fundamental steps in ammonia oxidation processes mediated by an abundant, first row transition metal.

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47

SELLMANN, D., E. BOEHLEN, M. WAEBER, G. HUTTNER та L. ZSOLNAI. "ChemInform Abstract: Transition Metal Complexes with Sulfur Ligands. Part 17. [μ-N2H2{Ru(PPh3dttd}2), the First Diazene Complex with Sulfur-Coordinated Transition Metal Centers(dttd2-: 2,3:8,9-Dibenzo-1,4,7,10-tetrathiadecane(2-))." Chemischer Informationsdienst 17, № 9 (1986). http://dx.doi.org/10.1002/chin.198609289.

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48

"Synthesis, 2-Naphthaldehyde ((5-[2- phenyl-1,3,4-oxadiazol-2-yl) hydrazine] -1,3,4-thiadiazol-2-yl) hydrazone) with Some Transition Metal Complexes." International Journal of Pharmaceutical Research 12, no. 02 (2020). http://dx.doi.org/10.31838/ijpr/2020.12.02.191.

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49

Flifel, Ibrahim, A., Ahmed H. Mohammed, and Iman H. Shewael. "Spectra Characterization, In vitro Evaluation of Antibacterial and Hemolytic Activity of Novel Ligand 5-(5-{(2Z)-2-[(2-Hydroxynaphthalen-1- yl)Methylidene]Hydrazinyl}-1,3,4-Oxadiazol-2-yl)Benzene-1,2,3-Triol with some its Transition Metal Complexes." International Journal of Pharmaceutical Quality Assurance 9, no. 01 (2018). http://dx.doi.org/10.25258/ijpqa.v9i01.11357.

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A new series of transition metal (Cr(III), Co(II), Ni(II)and Cu(II) complexes of ligand 5-(5-{(2Z)-2-[(2- hydroxynaphthalen-1- yl)methylidene]hydrazinyl}-1,3,4-oxadiazol-2-yl)benzene-1,2,3-triol were synthesized and evaluated for its biological activities. A ligand was synthesized by reaction propyl gallate and hydrazine hydrate in presence of ethanol to give 3, 4, 5- trihydroxybenzohydrazide followed by reaction with potassium hydroxide and carbon disulfide, the resultant was mixed with hydrazine hydrate to produce the ligand. The newly synthesized compounds were characterized by Fourier tran

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SELLMANN, D., W. SOGLOWEK, F. KNOCH та M. MOLL. "ChemInform Abstract: Transition-Metal Complexes with Sulfur Ligands. Part 48. Nitrogenase Model Compounds: (μ-N2H2(Fe(“NHS4”))2), the Prototype for the Coordination of Diazene to Iron Sulfur Centers and Its Stabilization Through Strong N-H···S Hydrogen Bo". ChemInform 20, № 49 (1989). http://dx.doi.org/10.1002/chin.198949307.

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