Unexpected formation of a dimeric cation-anionic complex of hypercoordinated tin in the reaction of bis[(2-oxopyrrolidino)methyl]tin dichloride with AgBF4 |
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| Authors: | S Yu Bylikin S A Pogozhikh A G Shipov Vad V Negrebetskii Yu E Ovchinnikov Yu I Baukov |
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| Institution: | (1) Russian State Medical University, 1 ul. Ostrovityanova, 117869 Moscow, Russian Federation;(2) A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul Vavilova, 117813 Moscow, Russian Federation |
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| Abstract: | A new cation-anionic complex of hypercoordinated tin, {L2Sn(OH)]+ BF4 ?}2 (L is a bidentate (2-oxopyrrolidino)methyl C,O-chelating ligand), was obtained by the reaction of L2SnCl2 with AgBF4 and structurally characterized by X-ray diffraction analysis. In crystalline form, the BF4 ? anions are bound to the dications through O?H...F hydrogen bonds (the H?F distance is 1.78 Å). The octahedral coordination of the Sn atoms is strongly distorted because of a weak additional interaction with solvate molecules of dioxane (the Sn?O distance is 3.16 Å). |
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| Keywords: | hypercoordinated tin compounds intramolecular coordination X-ray diffraction analysis |
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