Cobalt-doped iron-based coordination polymer catalyst with unique shell-shaped agglomerate for enhancing the reaction activity of Kumada-coupling

Abstract

Metal organic coordination polymers (MOCPs) with versatile structural topologies and flexible design of metal active sites have been considered as suitable heterogeneous catalysts to catalyze various coupling reaction. However, for Kumada-coupling reaction regarded as the most powerful strategy to synthesize biaryls constitute core structural units, rare relevant examples about coordination polymers as catalyst were reported. Herein, we prepared two-dimensional layered MOCP {[Fe (tda)(H2O)]n}via a facile solvothermal method, and investigated the corresponding catalytic activity of Kumada-coupling. Excitingly, the catalytic activity can be efficiently regulated via doping different divalent metal (Co/Mn/Ni) in [Fe (tda)(H2O)]n. Among them, cobalt-doped in [Fe (tda)(H2O)]n can be directly utilized to catalyze Kumada-coupling reaction with good to excellent yield, and reused three times without significant loss of catalytic activity.