Synthesis and Characterization of Three Vanadium（Ⅴ） Complexes Incorporating Tridentate Hydrazone Ligands of Thiophene-2-carboxylic Hydrazide and 2-Furoic Acid Hydrazide

• 作者: GENG Lei-Zhen WEI Wei XING Jing ZHOU Yin-Zhuang
• 来源期刊: 结构化学
• 学科: 化学
• 关键词: 钒(V) 复合物 表征 合成 噻吩 配体 糠酸 单晶X-射线衍射
• 年，卷（期）: 2012,（4）
• 页码范围: 562-568
• 页数: 7页
• 分类号: O614.511|Q945.11
• 语种: 英文

摘要

Divanadium(Ⅴ) complex [VO(aptch)(μ-OCH3)]2(1) and two monovanadium(Ⅴ) complexes [VO(apfah))(OEt)](2a and 2b,H2aptch = 2-hydroxyacetophenone thiophene-2-car-boxylic hydrazone,H2apfah = 2-hydroxyacetophenone 2-furoic acid hydrazone) have been synthesized and characterized.Single-crystal X-ray diffraction studies reveal that 1 is a cen-trosymmetric dimer bridged by two methoxido O-atoms.Complex 1 crystallizes in the monoclinic crystal system,space groups P21/c with a = 7.4825(4),b = 17.0928(11),c = 11.6961(7) ,β = 98.172(4)o,Z = 2,F(000) = 728,μ = 0.829 mm-1,the final R = 0.0457 and wR = 0.1137 for 2654 observed reflections with I 〉 2(I).The vanadium(V) is coordinated to the tridentate ligand,ethanol molecule to form a distorted square-pyramidal geometry,complexes 2a and 2b.Although 2a and 2b have the same asymmetric unit,they belong to different space groups.Complex 2a crystallizes in the monoclinic crystal system,space groups P21/n with a = 10.2293(2),b = 15.6660(3),c = 10.6298(2) ,β = 116.259(1)o,Z = 4,μ = 0.676 mm-1;complex 2b crystallizes in the triclinic crystal system,space groups P with a = 8.2808(4),b = 9.4704(5),c = 10.0819(5) ,α = 86.133(3),= 81.956(3),γ = 80.248(3)o,Z = 2 and μ = 0.670 mm-1.The hydrogen bonds are found to exist in 2b only.The crystal structure is stabilized by intermolecular hydrogen bonds of C-H···O.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	GENG Lei-Zhen		1	0	0.0	0.0
2	XING Jing		1	0	0.0	0.0
3	WEI Wei		1	0	0.0	0.0
4	ZHOU Yin-Zhuang		1	0	0.0	0.0