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Bis[µ-P,P'-methylenebis(diisopropylphosphonate)-?3 O,O':O]bis[chlorolithium(I)]: A centrosymmetric dimer of lithium chloride with terminal chloride anions

Henderson, K.W. and Kennedy, A.R. and MacDougall, D.J. and Strachan, D. (2003) Bis[µ-P,P'-methylenebis(diisopropylphosphonate)-?3 O,O':O]bis[chlorolithium(I)]: A centrosymmetric dimer of lithium chloride with terminal chloride anions. Acta Crystallographica Section C: Crystal Structure Communications, 59 (2). m49-m51. ISSN 0108-2701

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Abstract

The molecule of the title dimeric compound, [Li2Cl2(C13­H30O6P2)2] or [LiCl{[(iPrO)2P(O)]2CH2}]2, lies about an inversion center and features tetrahedrally coordinated Li atoms. The neutral ligands each chelate to one metal center and bridge to the other center through P=O units. Unusually for lithium chloride complexes, the Cl ions are in terminal rather than bridging positions. Principal dimensions include Li-O(four-membered ring) = 1.959 (3) and 2.056 (3) î.., Li-O(phosphonate ring) = 1.929 (3) î.., and Li-Cl = 2.293 (3) î...