First Examples of a Dithiolato Bridge in (6-C6Me6)RuII-Cr0,II,III Complexes. Sy
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- 作者：Richard Yee Cheong Shin ; Victor Wee Lin Ng ; Lip Lin Koh ; Geok Kheng Tan ; Lai Yoong Goh ; Richard D. Webster
- 刊名：Organometallics
- 出版年：2007
- 出版时间：August 27, 2007
- 年：2007
- 卷：26
- 期：18
- 页码：4555 - 4561
- 全文大小：227K
- 年卷期：v.26,no.18(August 27, 2007)
- ISSN：1520-6041
文摘
The interactions of [(HMB)RuII{
3-tpdt)}] (1) [HMB = 6-C6Me6, tpdt = S(CH2CH2S-)2] withCr(CO)6, [CpCr(CO)3]2, [CpCrCl2(SPyH)], and [Cp*Cr(CH3CN)4](PF6)2 (6) produced a series of thiolate-bridged Ru-Cr heterobimetallic complexes: viz., [{(HMB)Ru(
-2:3-tpdt)}{Cr(CO)4}] (3), [{(HMB)Ru(-2:3-tpdt)}{CpCr(CO)2}][CpCr(CO)3] (4), [{(HMB)Ru(-2:3-tpdt)}{CpCrCl}](PF6) (5), and[{(HMB)Ru(-2:3-tpdt)}{Cp*Cr(MeCN)}](PF6)2 (8), in respective yields of 29%, 67%, 62%, and 79%.Complex 6 was synthesized from [Cp*CrBr2]2 and found to readily convert to [Cp*Cr{(CH3)2CO}3][Cp*Cr{(CH3)CO}2(MeCN)](PF6)4 (7) upon recrystallization from acetone. Each compound could beelectrochemically oxidized and reduced in several one-electron or multiple-electron steps. The voltammetricresponses were complicated and varied depending on the electrode surface and temperature. The single-crystal X-ray structures of 3-5, 7, and 8 have been determined.
3-tpdt)}] (1) [HMB = 6-C6Me6, tpdt = S(CH2CH2S-)2] withCr(CO)6, [CpCr(CO)3]2, [CpCrCl2(SPyH)], and [Cp*Cr(CH3CN)4](PF6)2 (6) produced a series of thiolate-bridged Ru-Cr heterobimetallic complexes: viz., [{(HMB)Ru(-2:3-tpdt)}{Cr(CO)4}] (3), [{(HMB)Ru(-2:3-tpdt)}{CpCr(CO)2}][CpCr(CO)3] (4), [{(HMB)Ru(-2:3-tpdt)}{CpCrCl}](PF6) (5), and[{(HMB)Ru(-2:3-tpdt)}{Cp*Cr(MeCN)}](PF6)2 (8), in respective yields of 29%, 67%, 62%, and 79%.Complex 6 was synthesized from [Cp*CrBr2]2 and found to readily convert to [Cp*Cr{(CH3)2CO}3][Cp*Cr{(CH3)CO}2(MeCN)](PF6)4 (7) upon recrystallization from acetone. Each compound could beelectrochemically oxidized and reduced in several one-electron or multiple-electron steps. The voltammetricresponses were complicated and varied depending on the electrode surface and temperature. The single-crystal X-ray structures of 3-5, 7, and 8 have been determined.