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Dichlorobis(dibenzylamino)bis(tetra-hydrofuran)zirconium(IV) toluene hemisolvate

Henderson, K.W. and Kennedy, A.R. and McKeown, A.E. and Mulvey, R.E. (2001) Dichlorobis(dibenzylamino)bis(tetra-hydrofuran)zirconium(IV) toluene hemisolvate. Acta Crystallographica Section C: Crystal Structure Communications, 57 (6). pp. 674-675. ISSN 0108-2701

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Abstract

The title complex, [ZrCl2(C4H8O)(2)(C14H14N)(2)].0.5C(7)H(8), was prepared in an unusual manner by utilizing [Mg{N(CH2Ph)(2)}(2)] as a ligand transfer reagent. The Zr atom lies in a distorted octahedral environment where steric repulsion from the large dibenzylamino ligands leads to a widening of the N-Zr-N angle [99.95 (9)degrees] and corresponding compression of other angles [Cl-Zr-Cl 160.95 (3)degrees and O-Zr-O 78.22 (7)degrees]. This distortion is compared with those found in the previously determined structures of the dimethylamino and diethylamino analogues.