Structurally diverse copper(II) herbicide complexes: Mono- and bi-nuclear neutral or cationic complexes

被引:52
|
作者
DendrinouSamara, C
Psomas, G
Christophorou, K
Tangoulis, V
Raptopoulou, CP
Terzis, A
Kessissoglou, DP
机构
[1] ARISTOTELIAN UNIV THESSALONIKI,DEPT GEN & INORGAN CHEM,THESSALONIKI 54006,GREECE
[2] NRCPS DEMOKRITOS,INST MAT SCI,AGHIA PARASKEVI 15310,GREECE
来源
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1996年 / 18期
关键词
D O I
10.1039/dt9960003737
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Copper complexes with the commercial auxin herbicides 2,3-dichlorophenoxyacetic acid and 2-(2,4-dichlorophenoxy)propanoic acid and 2,2'-bipyridine (bipy) were prepared and characterized: [Cu-2(Cl2C6H3OCH2CO2)(4)(MeOH)(2)] 1, [Cu{Cl2C6H3OCH(Me)CO2}(2)(bipy)(H2O)] 2 and [Cu{Cl2C6H3OCH(Me)CO2)(bipy)(2)]Cl 3. The available evidence supports a dimeric structure for complex 1 while the presence of bipy leads to monomeric forms. In dimethylformamide solution the binuclear complex is converted into a monomeric complex upon addition of a > 1:2 ratio of bipy. The ESR powder spectrum of compound 2 exhibits features characteristic of the presence of a S = 1 triplet state which may be assigned to a hydrogen-bond network. The crystal structures of the three complexes have been determined.
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页码:3737 / 3743
页数:7
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