Tantalum(V) fluoride complexes of thio- and seleno-ether ligands and a comparison with the TaX5 (X = Cl or Br) analogues

被引：27

作者：

Benjamin, Sophie L. ^{[1
]}

Hyslop, Alison ^{[1
]}

Levason, William ^{[1
]}

Reid, Gillian ^{[1
]}

机构：

[1] Univ Southampton, Sch Chem, Southampton SO17 1BJ, Hants, England

来源：

JOURNAL OF FLUORINE CHEMISTRY | 2012年 / 137卷

基金：

英国工程与自然科学研究理事会;

关键词：

Tantalum pentafluoride; Thioether; Selenoether; X-ray structures; COORDINATION CHEMISTRY; RELATIVE STABILITY; OXIDE TRIFLUORIDE; NIOBIUM; ADDUCTS; HALIDES; SPECTRA; ZIRCONIUM(IV); TITANIUM(IV); 6-COORDINATE;

D O I：

10.1016/j.jfluchem.2012.02.014

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of TaF5 with SMe2 and RS(CH2)(2)SR (R = Me, Et or Pr-i) in anhydrous CH2Cl2 solution produce colourless, extremely moisture sensitive crystals of [TaF4(SMe2)(4)][TaF6] and [TaF4{RS(CH2)(2)SR}(2)][TaF6] respectively, which contain eight-coordinate cations and octahedral anions, whereas TaF5 reacts with neat SR2 (R = Me or Et) to form six-coordinate [TaF5(SR2)]. Very unstable [TaF5(SeMe2)] and [(TaF5)(2){mu-MeSe(CH2)(2)SeMe}] were isolated with the selenoether ligands and also contain six-coordinate tantalum species. Selected complexes of TaCl5 and TaBr5 have been prepared for comparison. The complexes have been characterised by IR, UV/visible and H-1 and F-19{H-1} NMR spectroscopies, and X-ray crystal structures are reported for [TaF4{MeS(CH2)(2)SMe}(2)][TaF6], [(TaCl5)(2){mu-MeSe(CH2)(2)SeMe}] and [TaCl5(SeMe2)]. O 2012 Elsevier B.V. All rights reserved.

引用

页码：77 / 84

页数：8

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