钨的聚（咪唑亚基）硼酸盐配合物：配位配体的空间与电子特征映射
Poly(imidazolyliden-yl)borato Complexes of Tungsten: Mapping Steric vs. Electronic Features of Coordinating Ligands.
作者信息
Inglis Callum M, Manzano Richard A, Kirk Ryan M, Sharma Manab, Stewart Madeleine D, Watson Lachlan J, Hill Anthony F
机构信息
Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia.
出版信息
Molecules. 2023 Nov 24;28(23):7761. doi: 10.3390/molecules28237761.
A convenient synthesis of HB(HImMe) (ImMe = -methylimidazolyl) is decribed. This salt serves in situ as a precursor to the tris(imidazolylidenyl)borate Li[HB(ImMe)] pro-ligand upon deprotonation with BuLi. Reaction with [W(≡CCHMe-4)(CO)(pic)(Br)] (pic = 4-picoline) affords the carbyne complex [W(≡CCHMe-4)(CO){HB(ImMe)}]. Interrogation of experimental and computational data for this compound allow a ranking of familiar tripodal and facially coordinating ligands according to steric (percentage buried volume) and electronic (ν) properties. The reaction of [W(≡CCHMe-4)(CO){HB(ImMe)}] with [AuCl(SMe)] affords the heterobimetallic semi-bridging carbyne complex [WAu(μ-CCHMe-4)(CO)(Cl){HB(ImMe)}].
描述了一种便捷的合成HB(HImMe)（ImMe = -甲基咪唑基）的方法。该盐在用BuLi去质子化后，原位作为三（咪唑基亚甲基）硼酸锂Li[HB(ImMe)]前体配体。与[W(≡CCHMe - 4)(CO)(pic)(Br)]（pic = 4 - 甲基吡啶）反应得到卡拜配合物[W(≡CCHMe - 4)(CO){HB(ImMe)}]。对该化合物的实验和计算数据进行分析，可根据空间（掩埋体积百分比）和电子（ν）性质对常见的三脚架型和面配位配体进行排序。[W(≡CCHMe - 4)(CO){HB(ImMe)}]与[AuCl(SMe)]反应得到异双金属半桥连卡拜配合物[WAu(μ - CCHMe - 4)(CO)(Cl){HB(ImMe)}]。
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