first structurally characterized examples of R2TlSeR′ species. A comparison of the structures of [Me2TlS(C6H5)]2 (1) and 2–6 with other group 13 analogue structures suggests that the degree of oligomerization differs for [Me2MSR′]n (M = Tl) versus the analogous (M = Al, Ga, and In) species. These findings areimportant in understanding the factors that govern oligomerization (i.e. ring size) and polymerization
检查了二甲基
铊 (III)
硫属元素酸盐中增加的空间体积对低聚反应的影响。Me3Tl 与一系列
苯硫醇和
硒醇在
甲苯或 thf 中的轻松反应导致形成 [ME2TlS(2,6-ME2C6H3)]∞ (2), [ME2TlS(2,4,6-tBu3C6H2)]∞ (3), [ME2TlSe(
C6H5)]2 (4), [ME2TlSe(2,4,6-Me3C6H2)]∞ (5) 和 [ME2TlSe(2,4,6-tBu3C6H2)]∞ (6)。4 的固态结构是二聚体,具有短的分子间 Tl…Se 相互作用,这为
铊产生了不对称的 Tl2SE2 核和扭曲的四面体
C2Se2 href=https://www.molaid.com/MS_195232 target="_blank">E2 键合环境。化合物 2 和 5 中
硫属元素
配体空间体积的增加导致形成具有 μ-E[2,(4),6-Me3C6H2] (E = S, Se) 基团和扭曲的四面体 C2E2 键合的聚合物结构
铊的环境。通过3 (E = S) 和6 (E = Se)