Suseno Sandy, Horak Kyle T, Day Michael W, Agapie Theodor
Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, MC 127-72, Pasadena, California 91125, United States.
Organometallics. 2013 Dec 9;32(23):6883-6886. doi: 10.1021/om400976x.
Triphosphine and diphosphine ligands with backbones designed to facilitate metal-arene interactions were employed to support multinuclear Ni complexes. Di- and trinuclear metal complexes supported by a triphosphine containing a triarylbenzene linker display diverse metal-arene binding modes. Multinuclear Ni halide complexes were isolated with strongly interacting metal centers bound to opposite faces of the coordinated arene. Upon reaction of the trinickel diiodide complex, , with disodium tetracarbonylferrate, a cofacial triangulo nickel(0) complex, , was isolated. The Ni cluster motif can also be supported by a -terphenyldiphosphine, where a terminal carbon monoxide ligand replaces the third phosphine donor. All multinuclear complexes feature strong metal-arene interactions, demonstrating the use of an arene as a versatile ligand design element for small clusters.
具有旨在促进金属 - 芳烃相互作用的骨架的三膦和二膦配体被用于支撑多核镍配合物。由含有三芳基苯连接体的三膦支撑的双核和三核金属配合物表现出多样的金属 - 芳烃结合模式。分离出多核镍卤化物配合物，其中强相互作用的金属中心与配位芳烃的相对面结合。三碘化二镍配合物与四羰基铁二钠反应后，分离出一个共面三角镍(0)配合物。镍簇基序也可以由α-三联苯二膦支撑，其中一个末端一氧化碳配体取代了第三个膦供体。所有多核配合物都具有强金属 - 芳烃相互作用，证明了芳烃作为小簇通用配体设计元素的用途。
