Structure, bonding, aromaticity and reactivity of Roesky's sulfoxide
作者:Karla Tersago、Vit Matuska、Christian Van Alsenoy、Alexandra M. Z. Slawin、J. Derek Woollins、Frank Blockhuys
DOI:10.1039/b706659g
日期:——
Fukui functions, led to a description of its structure, aromaticity and reactivity. In addition, the nature of the long sulfur-sulfur bond has been investigated. The bands in newly recorded infrared and Raman spectra have been assigned to the normal vibrations of the molecule, based on calculated vibrational data. The results of theoretical calculations of the 14N NMR chemical shifts have been compared
Synthesis and structure of new homo-and heteroligand carbonyl cluster complexes with [Fe3(μ3-Q)(μ3-X)] core (Q = Se, Te; X = S, As)
作者:N. A. Pushkarevsky、D. A. Bashirov、T. G. Terent’eva、A. V. Virovets、E. V. Peresypkina、H. Krautscheid、S. N. Konchenko
DOI:10.1134/s1070328406060042
日期:2006.6
New cluster complexes of iron [Fe(3)Q(AsCp*)(CO)(9)] (Q = Se, Te, Cp* = C-5(CH3)(5)) are synthesized with the square pyramidal cluster core Fe(3)QAs. A suitable procedure of the synthesis of known heterochalcogenide [Fe(3)QS(CO)(9)] clusters is developed. Monosubstituted [Fe(3)Q(AsCH3)(CO)(8)(PPh3)] and disubstituted [Fe(3)Q(AsCH3)(CO)(7)(PPh3)(2)] clusters formed in the reactions of [Fe(3)Q(AsCH3(CO)(9)] with PPh3 are studied. In monosubstituted clusters, the phosphine ligand is coordinated in the axial position to the Fe atom in the base of the Fe(3)QAs square pyramid, while in disubstituted clusters, both phosphine ligands coordinate the Fe atoms in the pyramid base, one ligand being in the axial and another one in the equatorial position. The NMR data support the possibility of migration of the Fe-Fe bonds in a triangle in the cluster core in the case of disubstituted clusters.