Reinfandt Niklas, Schoo Christoph, Dütsch Luis, Köppe Ralf, Konchenko Sergey N, Scheer Manfred, Roesky Peter W
Institut für Anorganische Chemie, Karlsruher Institut für Technologie (KIT), Engesserstr. 15, Geb. 30.45, 76131, Karlsruhe, Germany.
Institut für Anorganische Chemie, Universität Regensburg, Universitätsstraße 31, 93040, Regensburg, Germany.
Chemistry. 2021 Feb 24;27(12):3974-3978. doi: 10.1002/chem.202003905. Epub 2021 Jan 14.
A series of 4d/4f-polyarsenides, -polyarsines and -polystibines was obtained by reduction of the Mo-pnictide precursor complexes [{Cp Mo(CO) } (μ,η -E )] (E=As, Sb; Cp =tBu substituted cyclopentadienyl) with two different divalent samarocenes [Cp* Sm] and [(Cp ) Sm]. For the reductive conversion of the Mo-stibide only one product was isolated, featuring a planar tetrastibacyclobutadiene moiety as an unprecedented ligand for organometallic compounds. For the corresponding Mo-arsenide a tetraarsacyclobutadiene and a second species with a side-on coordinated As anion was isolated. The latter can be considered as reaction intermediate for the formation of the tetraarsacyclobutadiene.
通过用两种不同的二价钐茂化合物[Cp₂Sm]和[(Cp)₂Sm]还原磷族元素钼前体配合物[{CpMo(CO)}₂(μ,η²-E₂)]（E = As，Sb；Cp = tBu取代的环戊二烯基），得到了一系列4d/4f-多砷化物、多砷烷和多锑化物。对于钼锑化物的还原转化，仅分离出一种产物，其具有平面四锑环丁二烯部分，作为有机金属化合物中前所未有的配体。对于相应的钼砷化物，分离出了一个四砷环丁二烯和另一种具有侧配位As²⁻阴离子的物种。后者可被视为形成四砷环丁二烯的反应中间体。
