Dianion N1,N4-bis(salicylidene)-S-allyl-thiosemicarbazide complexes: Synthesis, structure, spectroscopy and thermal behavior

被引：39
作者：
Ahmadi, Mehdi [2 ]
Mague, Joel T. [3 ]
Akbari, Alireza [2 ]
Takjoo, Reza [1 ]
机构：
[1] Ferdowsi Univ Mashhad, Sch Sci, Dept Chem, Mashhad 917751436, Iran
[2] Payame Noor Univ, Dept Chem, Tehran 193954697, Iran
[3] Tulane Univ, Dept Chem, New Orleans, LA 70118 USA
来源：
POLYHEDRON | 2012年 / 42卷 / 01期
关键词：
Isorhiosemicarbazide; N2O2; donor; TGA; Spectroscopy; Crystal structures; THIOSEMICARBAZIDE-BASED LIGANDS; TRANSITION-METAL-COMPLEXES; SALEN-TYPE LIGAND; CRYSTAL-STRUCTURE; SCHIFF-BASE; COPPER(II) COMPLEXES; DIOXOURANIUM(VI); NICKEL(II); TRIDENTATE; CU(II);
D O I：
10.1016/j.poly.2012.05.004
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The products with the general formulas VO(Salits) 1, Mn(Salits)Br 2, Fe(Salits)Cl 3 and UO2(Salits)(MeOH)4 (Salits = N-1,N-4-bis(salicylidene)-S-allyl-thiosemicarbazide) are prepared by the reaction of salicylaldehyde-S-allyl-thiosemicarbazone (H2L) and salicylaldehyde with VOSO4 center dot 3H(2)O, Mn(CH3COO)(2)center dot 4H(2)O, FeCl3 center dot 6H(2)O and UO2(CH3COO)(2)center dot 2H(2)O, respectively. Complexes 1-4 were characterized by elemental analysis, spectroscopic (FT-IR and UV-Vis) and TGA techniques. Crystal and molecular structures of the complexes were determined by single crystal X-ray diffraction. The results revealed that the complexes 1,2 and 3 contain a dideprotonated tetradentate form of Salits coordinated via N2O2 donors along with oxido, bromido or chlorido ligands, respectively, and they have distorted square pyramidal geometries. However, the complex 4 adopts a severely distorted pentagonal bipyramidal geometry consisting of N2O2 coordination of Salits, a methanol ligand and two oxygens of the uranyl moiety. TG analysis showed that complex 3 is more stable than the others. (c) 2012 Elsevier Ltd. All rights reserved.
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页码：128 / 134
页数：7
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