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Heterobimetallic Ruthenium‐Cobalt Complexes Containing the Pentamethylcyclopentadienyl or Indenyl Ligand
Author(s) -
Ng Sin Yee,
Goh Lai Yoong,
Koh Lip Lin,
Leong Weng Kee,
Tan Geok Kheng,
Ye Suming,
Zhu Yinghuai
Publication year - 2006
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200500785
Subject(s) - chemistry , ruthenium , bimetallic strip , medicinal chemistry , cobalt , ligand (biochemistry) , redox , yield (engineering) , salt (chemistry) , catalysis , stereochemistry , inorganic chemistry , organic chemistry , receptor , biochemistry , materials science , metallurgy
The salt elimination reaction between NaCo(CO) 4 and the ruthenium complexes LRu(diphos)Cl and [(Ind)Ru(CO) 2 Cl] afforded the Ru–Co bimetallic complexes [LRu(μ‐CO) 2 (μ‐diphos)Co(CO) 2 ] [L = C 5 Me 5 (Cp*), diphos = Ph 2 P(CH 2 ) n PPh 2 , 3a : n = 1 , or 3b : n = 2; 3 : L = C 9 H 7 (Ind), diphos = Ph 2 PCH 2 PPh 2 ] and [(Ind)Ru(CO) 2 Co(CO) 4 ] ( 3d ), respectively, in high yields. However, the same reaction with the monophosphane analogue, [(Ind)Ru(PPh 3 ) 2 Cl], gave the heterobimetallic complex [(Ind)Ru(PPh 3 )(CO)(μ‐CO)Co(CO) 3 ] ( 3e ) in fair yield, together with redox‐initiated derivatives Ru(PPh 3 ) 2 (CO) 3 ( 4e ) and [(Ind)Co(CO)(PPh 3 )] ( 6e ). A similar redox process in the reaction of the dppf analogue, [(Ind)Ru(dppf)Cl] (dppf = 1,1′‐diphenylphosphanylferrocene) gave [Ru(dppf)(CO) 3 ] ( 4f ) and [(Ind)Co(CO) 2 ] ( 6f ), together with a complex salt [(Ind)Ru(dppf)(CO)][Co(CO 4 )] [ 5f·Co(CO) 4 ]. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)