Preparation and crystal structures of an ionic triple-hydrogen-bridged derivative of 9-BBN hydroborate zirconium(IV) |
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Authors: | Errun Ding |
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Institution: | Department of Chemistry, The Ohio State University, Columbus, OH 43210, USA |
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Abstract: | An ionic dinuclear triple-hydrogen-bridged 9-BBN hydroborate zirconium complex, K(Et2O)4]{(μ-H)2BC8H14}3Zr(μ-H)3Zr{(μ-H)2BC8H14}3] (1) was formed from the reaction of Zr{(μ-H)2BC8H14}4 with KH and aniline in diethyl ether. The molecular structure of compound 1 was determined by single-crystal X-ray diffraction analysis. Six 9-BBN hydroborate ligands are coordinated to two Zr atoms via two bridging H atoms, and two Zr atoms are connected by three bridging hydrogens in the anion part of this molecule. The distance of Zr?Zr is 3.1025(5) Å. The crystal structure of 1 suggests that agostic interactions between the zirconium metal center and α-C-H of the 9-BBN hydroborate ligand exist in the solid state. The Zr?H distances corresponding to the α-C-H?Zr agostic interactions are 2.579(4) Å and 2.743(4) Å. |
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Keywords: | Zirconium B-H-B bridges 9-BBN hydroborate Crystal structures Agostic interactions |
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