Studies of the Structures and Bonding of Gold-Bridged Dirhenium Carbonyl Cluster Complexes

Content Provider	Semantic Scholar
Author	Adams, Richard D. Wong, Yuen Onn Zhang, Qiang
Copyright Year	2013
Abstract	The compounds Re2(CO)8(μ-AuPPh3)2, 1, a dimer of Re(CO)4(μ-AuPPh3), and ax,ax-Re2(CO)8(PPh3)2 were obtained from UV–vis radiation-induced decarbonylation of the compound Re(CO)5[Au(PPh3)]. Compound 1 contains two rhenium atoms bridged by two AuPPh3 groups. The complex has 32 valence electrons and is formally unsaturated by the amount of two electrons. The Re–Re bond distance in 1 is unusually short (Re–Re = 2.9070(3) A), as found by a single-crystal structural analysis. The nature of the metal–metal bonding in 1 was investigated by DFT computational analyses, which have provided evidence not only for σ-bonding but also significant complementary π-bonding directly between the two rhenium atoms. The electronic structure of Re2(CO)8(μ-H)2, 2, was similarly analyzed and is compared with that of 1. Compound 1 is intensely colored due to low-energy, metal-based electronic transitions between the HOMO and HOMO-2 and the LUMO. Compound 1 reacts with I2 to yield Re2(CO)8(μ-AuPPh3)(μ-I), 3, and the known compound R...
Starting Page	7540
Ending Page	7546
Page Count	7
File Format	PDF HTM / HTML
DOI	10.1021/om4010127
Alternate Webpage(s)	https://s3.wp.wsu.edu/uploads/sites/1414/2016/06/17.pdf
Alternate Webpage(s)	https://doi.org/10.1021/om4010127
Volume Number	32
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article