A homologous series of alkynyl chalcoether complexes: [W(eta(2)-(PrEC)-Pr-i equivalent to CPh)(CO)(2)(Tp*)]BF4 (E = O, S, Se, Te; Tp* = hydrotris(dimethylpyrazol-1-yl)borate)

作者：Caldwell Lorraine M; Hill Anthony F^*; Willis Anthony C

来源：Journal of Organometallic Chemistry, 2017, 829: 48-57.

DOI：10.1016/j.jorganchem.2016.11.024

• Alkyne
• Chalcogen chalcoether
• Tungsten
• Complex

The first complete set of homologous alkynyl chalcoether complexes, isolated as the structurally characterized salts [W(eta(2)-(PrEC)-Pr-i equivalent to CPh)(CO)(2)(Tp*)]BF4 (A = O, S, Se, Te; Tp* = hydrotris(dimethylpyrazolyl) borate), result from the reactions of the free alkynes (PrEC)-Pr-i equivalent to CPh with [WI(CO)(3)(Tp*)] in the presence of AgBF4. The neutral complex [W(eta(2)-(PrSeC)-Pr-i equivalent to CPh)Cl(CO)(Tp*)] is obtained from the reaction of [W(eta(2)-(PrSeC)-Pr-i equivalent to CPh)(CO)(2)(Tp*)]BF4 with [(Bu4N)-Bu-n]Cl and co-exists in two forms in solution as a result of slow rotational isomerism of the alkyne. Depending on the choice of solvent, either pure rotamer may be crystallised.

• 出版日期2017-2-1