Bimetallic nickel complexes with bridging dithiolato Schiff base ligands: synthesis, mass spectral characterisation and electrochemistry

被引：6
作者：
Moutloali, RM
Nevondo, FA
Darkwa, J
Iwuoha, EI
Henderson, W
机构：
[1] Univ Western Cape, Dept Chem, ZA-7535 Bellville, South Africa
[2] Univ Waikato, Dept Chem, Hamilton, New Zealand
来源：
JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2002年 / 656卷 / 1-2期
基金：
新加坡国家研究基金会;
关键词：
dithiolato Schiff base; bimetallic nickel complexes; mass spectrometry; cyclic voltammetry;
D O I：
10.1016/S0022-328X(02)01626-1
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Schiff base dithiols with thiophene or phenyl linkers were prepared from condensation of the dialdehydes 2,5-(OHC)(2)C4H2S, 1,3-(OHC)(2)C6H4, 1,4-(OHC)(2)C6H4 and 1,4'-(OHC)(2)(C6H4)(2) with 4-H2NC6H4(SH). The Schiff base dithiols readily reacted with Ni(eta(5)- C5H5)(PR3)Br (R = Bu or Ph) in the presence of Et3N to form bimetallic complexes (eta(5)-C5H5)(PR3)Ni-SC6H4N=C(H)ArC(H)= NC6H4S-Ni(PR3)(eta(5)-C5H5) (Ar = C4H2S (6), 1,3-C6H4 (7), 1,4-C6H4 (8), 1,4'-(C6H4)(2) (9). The bimetallic nature was established from elemental analysis and mass spectrometry. Cyclic voltammetry of complexes 6, 8 and 9 are indicative of electronic communication between the nickel centres via the bridging dithiolato Schiff base ligands. (C) 2002 Elsevier Science B.V. All rights reserved.
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页码：262 / 269
页数：8
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