Photochemistry of (η-benzene)tricarbonylchromium, tricarbonyl-(η-cyclopentadienyl)manganese, and (η-cyclobutadiene)- and (tris-methylenemethane)-tricarbonyliron in frozen gas matrices at 12 K. Infrared spectroscopic evidence for dicarbonylmetal and dicarbonyl-(dinitrogen)metai complexes
作者:Antony J. Rest、John R. Sodeau、David J. Taylor
DOI:10.1039/dt9780000651
日期:——
Infraredevidence is presented for the formation of co-ordinatively unsaturated species [ML(CO)2][ML = Cr-(η-C6H6), Mn(η-C5H5), or Fe(η-C4H4), or FeC(CH2)H3}] on the u.v. photolysis of [ML(CO)3] complexes in argon and methane matrices, and dinitrogencomplexes [ML(CO)2(N2)] in nitrogen matrices at 12K. The primary photolysis step is readily reversed by visible light for [ML(CO)2] species of Cr and
红外证据提出了一种用于共ordinatively不饱和物种[ML(CO)的形成2 ] [ML = CR-(η-C 6 H ^ 6),锰(η-C 5 H ^ 5),或Fe(η-C 4 H 4)或Fe C(CH 2)H 3 }]在氩气和甲烷基质中的[ML(CO)3 ]配合物和二氮配合物[ML(CO)2(N 2)]在12 K的氮气中。可见光对Cr和Fe的[ML(CO)2]物种很容易使初级光解步骤逆转,而对于Mn则不容易。关于在溶液相取代反应中作为中间体的配位不饱和物质的假设进行了讨论。
Chemical Bonds without “Chemical Bonding”? A Combined Experimental and Theoretical Charge Density Study on an Iron Trimethylenemethane Complex
作者:Louis J. Farrugia、Cameron Evans、Marcus Tegel
DOI:10.1021/jp061846d
日期:2006.6.1
diffraction data, in conjunction with DFT(B3LYP) quantum calculations, have been used in a QTAIM analysis of the chargedensity in the trimethylenemethane (TMM) complex Fe(eta(4)-C[CH(2)](3))(CO)(3). The agreement between the theoretical and experimental topological properties is excellent. Only one bond path is observed between the TMM ligand and the Fe atom, from the central C(alpha) atom. However, much evidence