Hydrolysis of scandium alkyl derivatives supported by a pentadentate diborate ligand: Interconversion of hydroxo and oxo complexes
作者: Daniel W. BehWarren E. PiersLaurent MaronYan YangBenjamin S. GelfandJian-Bin Li
作者单位: 1Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
2LPCNO, Université de Toulouse, INSA, UPS, LPCNO, 135 Avenue de Rangueil, F-31077 Toulouse, France
3CNRS, LPCNO, F-31077 Toulouse, France
刊名: Polyhedron, 2020, Vol.179
来源数据库: Elsevier Journal
DOI: 10.1016/j.poly.2020.114410
关键词: ScandiumPentadentate ligandHydrolysisMetal hydroxosMetal oxos
原始语种摘要: Abstract(#br)Uncontrolled reaction of water with scandium alkyls (compounds 1-R ) supported by a dianionic, pentadentate ligand leads to rapid formation of an oxo-bridged dimer ( 2 ). Solid state samples of 1-CH 2 SiMe 3 can be exposed to ambient atmosphere to generate samples enriched in the bridging dihydroxo dimer 3 , which slowly converts to the μ-oxo species with elimination of water. DFT computations show that 3 is actually more thermodynamically stable than 2 , but the reactivity of 3 with the water eliminated leads to its decomposition to 2 and several hydrolysis products. Some of these products were characterized by X-ray crystallography, specifically a hexameric scandium dihydroxo cluster ( 4 ) in which the pentadentate ligand has partially demetallated. Attempts to synthesize...
全文获取路径: Elsevier  (合作)
影响因子:1.813 (2012)

  • supported 支承的
  • derivatives 派生物
  • alkyl 烷基
  • complexes 联合企业
  • scandium 
  • ligand 配合体