Synthesis and characterization of novel metallocarborane triple-decker complexes
作者： Jennifer M. Forward , D. Michael P. Mingos , Walter Siebert , Jan Hauss , Harold R. Powell
DOI: 10.1039/DT9930001783
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摘要: The syntheses of two novel triple-decker complexes are described where the [C2B9H11]2– dianion is utilized for first time as a terminal ligand. sandwich anion [Co(C5H5)(C3B2MeEt4)]–(C3B2MeEt4= 1,3,4,5-tetraethyl-1H-2,3-dihydro-2-methyl-1,3-diborol-2-yl) reacts with and bis(pentane-2,4-dionato)nickel(II) to give symmetrical tetradecker complex [Ni{(C3B2MeEt4)-Co(C5H5)}2] unsymmetrical [(C5H5)Co(C3B2MeEt4)Ni(C2B9H11)] [(C5H5)Co(C3B2MeEt4)Co(C2B9H11)]. molecular structures three were established from elemental analyses 1H 11B-{1H} NMR mass spectroscopic studies. In addition, single-crystal X-ray ones performed. Both crystallize in orthorhombic space group P212121(no. 19) cell dimensions: CoNi, a= 10.077(4), b= 13.880(1), c= 18.318(2); CoCo, 9.973(3), 13.885(3), 18.280(5)A. CoCo was also synthesised higher yield reaction [Co(C5H5)(C3B2MeEt4)]– cobalt(II) chloride. redox properties studied by cyclic voltammetry.
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