Secondary bonding in functionalized organotellurium compounds: preparation and structural characterization of bis(acetamido)tellurium(IV) diiodide and bis(4-methylbenzoylmethyl)tellurium(II)
作者:Ashok K.S. Chauhan、Anamika、Arun Kumar、Ramesh C. Srivastava、Ray J. Butcher
DOI:10.1016/j.jorganchem.2004.09.036
日期:2005.1
Elemental tellurium inserts, under mild conditions, between C–I bond of iodoacetamide to afford bis(acetamido)tellurium(IV) diiodide (NH2COCH2)2TeI2, 1. Heating of N-bromomethylphthalimide with activated tellurium powder however, resulted in the formation of bis(phthalimido)methane, 2, instead of the expected product bis(phthalimidomethyl)tellurium(IV) dibromide. The IR spectrum of 1 is indicative
元素碲插入,在温和条件下,碘乙酰胺的C-1之间的键,得到双(乙酰氨基)碲(IV)二碘化物(NH 2 COCH 2)2的Tel 2,1。但是,将N-溴甲基邻苯二甲酰亚胺与活化的碲粉一起加热会形成双(邻苯二甲酰亚胺基)甲烷2,而不是预期的双溴邻苯二甲酰亚胺基(Ⅳ)产物。的IR光谱1表示分子内碲⋯OC相互作用其也由它的单晶结构证实。具有平面小位螯合有机配体的化合物具有蝴蝶形状,可赋予几乎完美的C2 v分子对称,但不同于其他有机碲(IV)碘化物,由于存在分子内Te⋯O二级键以及分子间N– ,所以固态结构1没有分子间的Te⋯I或I⋯I二级相互作用H⋯O,N–H⋯I和C–H⋯I氢键。通过还原相应的二溴化物制备的双(4-甲基苯甲酰基甲基)碲化物(4-MeC 6 H 4 COCH 2)2 Te,3b是第一个结构上表征的无环二烷基碲化物,有趣的是,它始终不涉及分子内Te⋯OC相互作用存在于母体二卤化物(4-YC