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Novaković SB, Bogdanović GA, Brčeski ID, Leovac VM. Different intermolecular interactions in azido[2-(diphenylphosphino)benzaldehyde semicarbazonato-κ2P,N1,O]nickel(II). Acta Crystallogr C 2009; 65:m263-5. [DOI: 10.1107/s0108270109021970] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2009] [Accepted: 06/09/2009] [Indexed: 11/11/2022] Open
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Pogány P, Kovács A, Szécsényi KM, Leovac VM. FT-IR and theoretical study of 3,5-dimethyl-1H-pyrazole-1-carboxamidine (L) and the complexes CoL2(H2O)2(NO3)2, NiL2(H2O)2(NO3)2. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2008; 71:1466-1473. [PMID: 18562246 DOI: 10.1016/j.saa.2008.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2008] [Accepted: 05/05/2008] [Indexed: 05/26/2023]
Abstract
In the paper a joint experimental and theoretical study of 3,5-dimethyl-1H-pyrazole-1-carboxamidine (L) as well as its complexes CoL2(H2O)2(NO3)2 and NiL2(H2O)2(NO3)2 is reported. On the basis of FT-IR experiments and a DFT-derived scaled quantum mechanical force field the normal coordinate analysis of L was carried out. The FT-IR spectra of the two complexes were interpreted using the present assignment of L and computed vibrational data of the complexes. The ionic and charge transfer interactions in the complexes were assessed by means of natural bond orbital (NBO) analysis.
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Vojinović-Ješić LS, Bogdanović GA, Leovac VM, Češljević VI, Jovanović LS. Transition metal complexes with Girard reagent-based ligands. Part IV. Synthesis and characterization of pyridoxilidene Girard-T hydrazone complexes. Crystal structure of the copper(II) complex. Struct Chem 2008. [DOI: 10.1007/s11224-008-9368-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Miodragoviĉ ZM, Vučkoviĉ G, Leovac VM, Buzash VM. Mixed-Ligand Complexes of Co(II) and Co(Iii) with Tetra-Or Octaazamacrocycles and a Bicyclic Dicarboxylate Ligand. ACTA ACUST UNITED AC 2008. [DOI: 10.1080/00945710009351747] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Jaćimović ŽK, Leovac VM, Tomić ZD. Crystal structure of hexakis( #2-chloro)-#4-oxo-tetrakis((3,5-dimethylpyrazole) copper(II)) ethanol tetrasolvate, Cu4OCl6(C5H8N2)4 · 4C2H5OH. Z KRIST-NEW CRYST ST 2007. [DOI: 10.1524/ncrs.2007.0103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Leovac VM, Jovanović LS, Jevtović VS, Pelosi G, Bisceglie F. Transition metal complexes with thiosemicarbazide-based ligand – Part LV: Synthesis and X-ray structural study of novel Ni(II) complexes with pyridoxal semicarbazone and pyridoxal thiosemicarbazone. Polyhedron 2007. [DOI: 10.1016/j.poly.2007.01.041] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Leovac VM, Joksović MD, Divjaković V, Jovanović LS, Saranović Z, Pevec A. Synthesis, spectroscopic and X-ray characterization of a copper(II) complex with the Schiff base derived from pyridoxal and aminoguanidine: NMR spectral studies of the ligand. J Inorg Biochem 2007; 101:1094-7. [PMID: 17544151 DOI: 10.1016/j.jinorgbio.2007.04.004] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2007] [Revised: 04/04/2007] [Accepted: 04/05/2007] [Indexed: 11/24/2022]
Abstract
A copper(II) complex with the pyridoxal-aminoguanidine (PL-AG) Schiff base adduct, as an organic compound of the very potent biological activity and promising pharmacological importance in the treatment of diabetic complications, has been prepared and characterized. The X-ray structural analysis of the [CuCl2(PL-AG)] complex showed that it has a distorted pseudo-square-pyramidal (4+1) structure with the tridentate ONN Schiff base in the equatorial plane, with the Cu-O(1), Cu-N(1) and Cu-N(3) bond lengths of 1.917(2)A, 1.930(2)A and 1.984(2)A, respectively. The bond length of the equatorial Cu-Cl(1) is 2.279(1)A, while that of the apical Cu-Cl(2) is 2.792(1)A. Pyridoxal fragment is coordinated in its zwitterionic form. In addition to the X-ray structural analysis, the complex was characterized by IR spectrometric, conductometric and magnetic techniques, and the ligand itself by IR, 1H and 13C NMR spectra.
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Tomić ZD, Kapor A, Žmirić A, Leovac VM, Zobel D, Zarić SD. Comparison of structural features of three new cis-dioxomolybdenum(VI) complexes with 2-hydroxy-1-naphthaldehyde-S-methylisothiosemicarbazone: Possible role of intermolecular interactions on the geometry of the cis-MoO2 unit. Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2006.10.026] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kovács A, Szécsényi KM, Leovac VM, Tomić ZD, Pokol G. Synthesis under self-controlled reaction conditions: Reaction of tetraamminezinc(II) chloride with 3,5-dimethyl-1-thiocarboxamide pyrazole. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.03.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Leovac VM, Novaković SB, Bogdanović GA, Joksović MD. Synthesis and reaction of Schiff base 4-(pyridin-3-ylmethylimino)-pent-2-en-2-ol with FeCl3. Struct Chem 2007. [DOI: 10.1007/s11224-007-9148-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Leovac VM, Jovanović LS, Divjaković V, Pevec A, Leban I, Armbruster T. Transition metal complexes with thiosemicarbazide-based ligands. Part LIV. Nickel(II) complexes with pyridoxal semi- (PLSC) and thiosemicarbazone (PLTSC). Crystal and molecular structure of [Ni(PLSC)(H2O)3](NO3)2 and [Ni(PLTSC-H)py]NO3. Polyhedron 2007. [DOI: 10.1016/j.poly.2006.07.031] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Leovac VM, Bombicz P, Szécsényi KM, Joksović MD. Copper(II) Complexes with Reduced Schiff Base: Synthesis, Spectroscopic, Thermal, X-Ray, and Cytotoxic Studies of Novel Copper(II) Complexes with an Arylpyrazole Ligand. Aust J Chem 2007. [DOI: 10.1071/ch07183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The synthesis of a novel arylpyrazole-derived ligand, 1,2-bis[(1,3-diphenylpyrazol-4-yl)methyl]diaminoethane (Ph4Pz2mde), and its complexes prepared with CuCl2 [Cu(Ph4Pz2mde)Cl2(MeOH)] 1, CuBr2 [Cu(Ph4Pz2mde)Br2(MeOH)] 2, from MeOH, and [Cu(Ph4Pz2mde)Cl2(DMF)] 3, from a mixture of MeOH and DMF, are described. The complexes are characterized by elemental and thermal analysis and FT-IR spectroscopy, while the 1H and 13C NMR assignments are given for the ligand. The crystal and molecular structure of [Cu(Ph4Pz2mde)Cl2(DMF)] was determined by single-crystal X-ray diffraction. In-vitro cytotoxicity of the Ph4Pz2mde ligand and two copper(ii) complexes was obtained using sulforhodamine B (SRB) treatment against three human tumour cell lines: HeLa (epitheloid carcinoma of cervix), MCF-7 (breast adenocarcinoma), and MRC-5 (lung fetal fibroblasts).
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Argay G, Kálmán A, Párkányi L, Leovac VM, Brceski ID, Radivojsa PN. Transition Metal Complexes with Thiosemicarbazide-Based Ligands. Part 37.* Synthesis and Study of the first Thiosemi-Carbazide-Derived Copper(I) Complexes: Crystal Structure of [2-(Diphenylphosphino)Benzaldehyde Thiosemicarbazonato(−1)] Copper(I)-Nitrate-Methanol Solvate. J COORD CHEM 2006. [DOI: 10.1080/00958970008047074] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kapor A, Ribár B, Leovac VM, Argay G, Kálmán A, Chundak SY. TRANSITION METAL COMPLEXES WITH HYDRAZIDES AND HYDRAZONES. PART 81. X-RAY CRYSTAL STRUCTURE OF A CATENA-POLYBROMO (ACETONE-1-NAPHTHOYLHYDRAZONE) COPPER(II)-COPPER(I) COMPLEX. J COORD CHEM 2006. [DOI: 10.1080/00958979608022699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Argay G, Kálmán A, Leovac VM, Češljević VI, Ribár B. TRANSITION METAL COMPLEXES WITH THIOSEMICARBAZIDE-BASED LIGANDS. PART 25. SYNTHESIS AND X-RAY CRYSTAL STRUCTURE OF CIS-DIOXO [(SALICYLALDEHYDE THIOSEMICARBAZONATO(1-))] AQUOMOLYBDENUM (VI)CHLORIDE MONOHYDRATE, [MoO2(HL)H2O]Cl·H2O. J COORD CHEM 2006. [DOI: 10.1080/00958979608023549] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ivanović I, Andjelković K, Beljanski V, Prelesnik BV, Leovac VM, Momirović M. PENTAGONAL BIPYRAMIDAL COMPLEXES OF Co(II) WITH SINGLY- AND DOUBLY-DEPROTONATED2′,2″-(2,6-PYRIDINDIYLDI-ETHYLIDENE)DIOXAMOHYDRAZIDE The Crystal Structure of [Diaqua-2′,2″-(2,6-Pyridindiyldiethylidene) Dioxamohydrazidecobalt(II)] Hexahydrate. J COORD CHEM 2006. [DOI: 10.1080/00958979708022862] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Leovac VM, Ribár B, Argay G, Kálmán A, Brčeski I. TRANSITION METAL COMPLEXES WITH THIOSEMICARBAZIDE-BASED LIGANDS. PART 28. SYNTHESIS AND X-RAY CRYSTAL STRUCTURE OF THE FIRST PHOSPHORUS-BONDED THIOSEMICARBAZIDE COMPLEX: [2-(DIPHENYLPHOSPHINO) BENZALDEHYDE THIOSEMICARBAZONATO(1-)] PYRIDINENICKEL(II)-NITRATE. J COORD CHEM 2006. [DOI: 10.1080/00958979608028171] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Evans IR, Howard JA, Szécsényi KM, Leovac VM, Jacimovic ZK. Synthesis, characterization and crystal structure of a novel Ni(II) complex, Ni(L-H)2 (L = 3,5-dimethyl-1-thiocarboxamidopyrazole). J COORD CHEM 2006. [DOI: 10.1080/00958970410001671183] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Drasković BM, Bogdanović GA, Leovac VM, Brceski ID, Poleti D. Transition metal complexes with thiosemicarbazide-based ligands. LIII. [4-(2-Diphenylphosphino-α-ethoxybenzyl-κ P)- S-methyl-1-(4-oxidopent-3-en-4-ylidene-κ O)thiosemicarbazido-κ 2N1, N4]nickel(II). Acta Crystallogr C 2006; 62:m319-22. [PMID: 16823202 DOI: 10.1107/s0108270106018932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2006] [Accepted: 05/22/2006] [Indexed: 11/10/2022] Open
Abstract
The title compound, [Ni(C(28)H(30)N(3)O(2)PS)], crystallizes with two independent molecules in the asymmetric unit. The Ni(II) atoms are in significantly deformed square-planar environments formed by an ONNP donor set from a thiosemicarbazide-based tetradentate ligand. The Ni(II) atom and the ONN donor atoms are nearly coplanar, while the P atom deviates from their mean planes by 0.278 (4) and 0.202 (4) Angstrom for the two independent molecules. The P-containing chelate rings are remarkably non-planar, adopting a boat conformation, which is unusual for chelate rings in transition metal complexes with thiosemicarbazide-based tetradentate ligands. The orientation of the ethoxy group bonded to this chelate ring is caused by an intramolecular C-H...pi interaction with the opposing phenyl ring. There are no hydrogen bonds; instead, numerous intermolecular C-H...pi interactions dominate in the crystal packing.
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Szécsényi KM, Leovac VM, Evans IR. Synthesis and characterisation of a novel polymeric Cd complex, catena-(μ-thio)[bis( N-phenylthiourea] bis(dimethylsulphoxide)dichlorocadmium(II). J COORD CHEM 2006. [DOI: 10.1080/00958970500171240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Bogdanović GA, Jaćimović ZK, Leovac VM. Transition metal complexes with pyrazole-based ligands. XXII. Di-μ-thiocyanato-bis[(3,5-dimethyl-1H-pyrazole-1-carboxamidine-κ2N,N′)(thiocyanato-κN)copper(II)] and a redetermination of bis(3,5-dimethyl-1H-pyrazole-1-carboxamidine-κ2N,N′)bis(nitrato-κO)copper(II). Acta Crystallogr C 2005; 61:m376-9. [PMID: 16082085 DOI: 10.1107/s0108270105018913] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2005] [Accepted: 06/14/2005] [Indexed: 11/11/2022] Open
Abstract
The title Cu(II) complex, [Cu2(NCS)4(C6H10N4)2], represents the first crystal structure of a polynuclear transition metal complex with the 3,5-dimethyl-1H-pyrazole-1-carboxamidine ligand (HL). It is compared with previously reported crystal structures of metal complexes with the same HL ligand. The molecule contains an eight-membered binuclear Cu2(NCS)2 ring, which is centrosymmetric and in a chair conformation. The Cu atom has a distorted square-pyramidal geometry with a very elongated Cu-S bond of 2.993 (2) A. The crystal structure redetermination of the bis(3,5-dimethyl-1H-pyrazole-1-carboxamidine-kappa(2)N,N')bis(nitrato-kappaO)copper(II)complex, [Cu(NO3)2(C6H10N4)2], and analysis of its hydrogen bonds confirm the significance of the NO3 groups in the formation of a three-dimensional hydrogen-bonding network. Both complexes are centrosymmetric, the inversion centre being located at the mid-point of the Cu...Cu line in (I) and the Cu atom being located at the inversion centre in (II).
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Kovács A, Nemcsok D, Pokol G, Mészáros Szécsényi K, Leovac VM, Jaćimović ŽK, Radosavljević Evans I, Howard JAK, Tomić ZD, Giester G. Structural, spectroscopic and computational studies of the HgL2Cl2 complex (L = 3,5-dimethyl-1-thiocarboxamide pyrazole) and the crystal structure of L. NEW J CHEM 2005. [DOI: 10.1039/b416816j] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Vojinović LS, Leovac VM, Novaković SB, Bogdanović GA, Csanádi JJ, Češljević VI. Transition metal complexes with Girard reagent-based ligands, Part I: Synthesis and crystal structure of the first cobalt(III) complexes with Schiff base derivative of Girard reagent. INORG CHEM COMMUN 2004. [DOI: 10.1016/j.inoche.2004.09.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Evans IR, Howard JA, Howard LE, Evans JS, Jaćimović ŽK, Jevtović VS, Leovac VM. Transition metal complexes with pyrazole based ligands, part 18: new binuclear Cu(I), Cu(II) and Co(II) complexes with 3,5-dimethyl-1-thiocarboxamide pyrazole: synthesis, structural and magnetic studies. Inorganica Chim Acta 2004. [DOI: 10.1016/j.ica.2004.06.058] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Brčeski ID, Leovac VM, Bogdanović GA, Sovilj SP, Revenco M. Synthesis, physicochemical properties and crystal structure of isothiocianato [2-(diphenylphosphino)benzaldehyde selenosemicarbazonato(1−)] nickel(II). INORG CHEM COMMUN 2004. [DOI: 10.1016/j.inoche.2003.11.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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