The preparation and characterization of seven-coordinate tin(IV) complexes of the 2,6-diacetylpyridine Schiff bases of S-alkyl/aryl-dithiocarbazates and the X-ray crystal structure of the [Sn(dapsme)I2] complex (dapsme=doubly deprotonated form of the 2,6-diacetylpyridine Schiff base of S-methyldithiocarbazate)

被引：36
作者：
Ali, MA
Mirza, AH
Tan, AL
Wei, LK
Bernhardt, PV
机构：
[1] Univ Brunei Darussalam, Dept Chem, Negara 1410, Brunei
[2] Univ Queensland, Dept Chem, Brisbane, Qld 4072, Australia
来源：
POLYHEDRON | 2004年 / 23卷 / 11期
关键词：
tin(IV) complexes; dithiocarbazates; 2,6-diacetylpyridine Schiff bases of S-alkyldithiocarbazates; seven-coordinate tin(IV) complexes;
D O I：
10.1016/j.poly.2004.05.010
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
New tin(IV) complexes of empirical formula, Sn(SNNNS)I-2 (SNNNS = anionic form of the 2,6-diacetylpyridine Schiff bases of S-methyl- or S-benzyldithiocarbazate) have been prepared and characterized by a variety of physico-chemical techniques. The structure of Sn(dapsme)I-2 has been determined by single crystal X-ray crystallographic structural analysis. The complex has a seven-coordinate distorted pentagonal-bipyramidal geometry with the Schiff base coordinated to the tin(IV) ion as a dinegatively charged pentadentate chelating agent via the pyridine nitrogen atom, the two azomethine nitrogen atoms and the two thiolate sulfur atoms. The ligand occupies the equatorial plane and the iodo ligands are coordinated to the tin(IV) ion at axial positions. The distortion from an ideal pentagonal bipyramidal geometry is attributed to the restricted bite size of the pentadentate ligands. (C) 2004 Elsevier Ltd. All rights reserved.
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页码：2037 / 2043
页数：7
相关论文
共 40 条
[1]   Reaction of anionic oxygen donors with the antitumour copper(II)-pyridine-2-carbaldehyde thiosemicarbazone (HL) system and the crystal structure of [{Cu(HL)(H2PO4)}(2)][H2PO4](2)center dot 2H(3)PO(4)center dot 2H(2)O [J].
Ainscough, EW ;
Brodie, AM ;
Ranford, JD ;
Waters, JM .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1997, (07) :1251-1255
[2]   THE CHARACTERIZATION OF BOTH THE COORDINATED AND NONCOORDINATED SACCHARINATE ION - THE SYNTHESES AND CRYSTAL-STRUCTURES OF AQUA(2-FORMYLPYRIDINE THIOSEMICARBAZONATO)(SACCHARINATO-N)COPPER(II) HEMIHYDRATE AND 2,2'-BIPYRIDYL-(2-FORMYLPYRIDINE THIOSEMICARBAZONATO)COPPER(II) SACCHARINATE DIHYDRATE [J].
AINSCOUGH, EW ;
BAKER, EN ;
BRODIE, AM ;
CRESSWELL, RJ ;
RANFORD, JD ;
WATERS, JM .
INORGANICA CHIMICA ACTA, 1990, 172 (02) :185-190
[3]   THE REACTION OF THE PYROPHOSPHATE ION WITH THE ANTITUMOR COMPLEX [(CUL(CH3COO))2] (HL = 2-FORMYLPYRIDINE THIOSEMICARBAZONE) AND THE SINGLE-CRYSTAL X-RAY STRUCTURE OF [(CUL)4P2O7].NH2O [J].
AINSCOUGH, EW ;
BRODIE, AM ;
RANFORD, JD ;
WATERS, JM ;
MURRAY, KS .
INORGANICA CHIMICA ACTA, 1992, 197 (01) :107-115
[4]  
AKBAR M, POLYHEDRON
[5]  
AKBAR M, 2003, POLYHEDRON, V22, P1471
[6]   Palladium(II) and platinum(II) complexes of Schiff bases derived from 2,6-diacetylpyridine and S-methyldithiocarbazate and the X-ray crystal structure of the [Pd(mdapsme)Cl]* complex [J].
Ali, MA ;
Mirza, AH ;
Keng, STW ;
Butcher, RJ .
TRANSITION METAL CHEMISTRY, 2003, 28 (02) :241-245
[7]   Biological activity of palladium(II) and platinum(II) complexes of the acetone Schiff bases of S-methyl- and S-benzyldithiocarbazate and the X-ray crystal structure of the [Pd(asme)2] (asme=anionic form of the acetone Schiff base of S-methyldithiocarbazate) complex [J].
Ali, MA ;
Mirza, AH ;
Butcher, RJ ;
Tarafder, MTH ;
Keat, TB ;
Ali, AM .
JOURNAL OF INORGANIC BIOCHEMISTRY, 2002, 92 (3-4) :141-148
[8]  
Ali MA, 2001, INORG CHIM ACTA, V320, P1
[9]  
[Anonymous], SHELX PROGRAMS CRYST
[10]   Synthesis and spectroscopic characterisation of cobalt(III) complexes with S-benzyl-β-N-(5-methylpyrazole-3-yl)methylenedithiocarbazate (H2L):: X-ray structures of [Co(HL)2]NO3•EtOH (1) and [Co(HL)(L)]•H2O (2) [J].
Bera, P ;
Butcher, RJ ;
Chaudhuri, S ;
Saha, N .
POLYHEDRON, 2002, 21 (01) :1-6
1234