Excited-State Distortions Determined from Structured Luminescence of Nitridorhenium(V) Complexes
作者:Susan E. Bailey、Rebecca A. Eikey、Mahdi M. Abu-Omar、Jeffrey I. Zink
DOI:10.1021/ic010680m
日期:2002.4.1
The nitridorhenium(V) complexes ReNCl(2)(PCy3)(2) (1), ReNBr(2)(PCy3)(2) (2), ReNCl(2)(PPh3)(2) (3), and ReNBr(2)(PPh3)(2) (4) produce structured emission spectra upon excitation at low temperature. The origin, E(00), occurs at 15 775, 16 375, 15 875, and 16 300 cm(-1), respectively. The vibronic peaks are regularly spaced with an average energy separation corresponding to the Re triple bond N stretching
Synthesis of 2-(diphenylphosphoryl)phenyl ethers of ethylene glycols and structure of their sodium and potassium complexes
作者:I. S. Ivanova、I. N. Polyakova、V. E. Baulin、E. N. Pyatova、E. S. Krivorot’ko、A. Yu. Tsivadze
DOI:10.1134/s1070363216040186
日期:2016.4
assembly on sodium and cesium cations were used to prepare 2-(diphenylphosphoryl)phenyl ethers of ethyleneglycols Ln with varied number of polyether units (n = 3–8). Previously unknown dinitro and disulfo derivatives of 2-(diphenylphosphoryl)phenyl ethers of di- and triethylene glycols were synthesized. Complexes [NaL4]NCS·C6H6, [NaL4]ClO4, [KL5]NCS, and [KL5]ReO4 were synthesized, and their crystal structure
Synthesis and structures of anionic rhenium polyhydride complexes of boron–hydride ligands and their application in catalysis
作者:Liam J. Donnelly、Simon Parsons、Carole A. Morrison、Stephen P. Thomas、Jason B. Love
DOI:10.1039/d0sc03458d
日期:——
pinacol boron ligands. Variable-temperature NMR spectroscopy supported the presence of seven hydride ligands but further insight was hindered by the fluxionality of both hydride and boron ligands at low temperature. Further evaluation of the structure by Ab Initio Random Structure Searching (AIRSS) identified the presence of hydride, boryl, σ-borane, and dihydroborate ligands. This complex, either isolated
Preparation of Cyclopentadienyltricarbonylrhenium Complexes Using a Double Ligand-Transfer Reaction
作者:Todd W. Spradau、John A. Katzenellenbogen
DOI:10.1021/om971018u
日期:1998.5.1
double ligand-transferreaction is described for the preparation of substituted cyclopentadienyltricarbonylrhenium complexes. In the reaction, potassium perrhenate(VII) is reduced and carbonylated by treatment with chromium trichloride and chromium hexacarbonyl to provide a proposed alkoxy carbonyl rhenium(I) intermediate. It is believed that this intermediate then undergoes a Cp ligand-transfer reaction
An oxidovanadium(IV) complex having a perrhenato ligand: An efficient catalyst for aerobic oxidation reactions of benzylic and propargylic alcohols
作者:Daiki Kobayashi、Shintaro Kodama、Youichi Ishii
DOI:10.1016/j.tetlet.2017.07.034
日期:2017.8
An oxidovanadium(IV) complex having a perrhenato ligand [VO(ReO4)(4,4′-tBubpy)2][0.25SO4·0.5ReO4] (4,4′-tBubpy = 4,4′-di-tert-butyl-2,2′-bipyridine) efficiently catalyzes not only dehydrogenative oxidation of benzylic and propargylic mono-alcohols but also oxidative CC bond cleavage of meso-1,2-diaryl-1,2-ethanediols under atmospheric molecular oxygen, affording the corresponding carbonyl compounds
具有高a酸酯配体[VO(ReO 4)(4,4'- t Bubpy)2 ] [0.25SO 4 ·0.5ReO 4 ](4,4'- t Bubpy = 4,4'-二-叔丁基-2,2'-联吡啶)有效地催化不仅苄和炔丙基单醇的脱氢氧化,而且氧化ç的C键裂解内消旋二芳基-1,2- ethanediols -1,2-下大气分子氧,以高收率得到相应的羰基化合物。