Formation and crystal structures of [(alkoxy)bis(pyridin-2-yl)methanolato-N,O,N]tin(IV) complexes |
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| Authors: | R. Alan Howie Geraldo M. de Lima James L. Wardell Solange M.S.V. Wardell |
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| Affiliation: | 1. Department of Chemistry, University of Aberdeen, Meston Walk, Old Aberdeen, AB24 3UE Scotland, United Kingdom;2. Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627 Pampulha, 31270-901 Belo Horizonte, MG, Brazil;3. CHEMSOL, 1 Harcourt Road, Aberdeen, AB15 5NY Scotland, United Kingdom |
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| Abstract: | Reactions of bis(pyridin-2-yl)ketone with tin tetrahalides, SnX4 (X = Cl or Br), or organotin trichlorides, R′SnCl3 (R′ = Ph, Bu or CH2CH2CO2Me), in ROH (R = Me or Et) readily produces RObis(pyridin-2-yl)methanolato)tin complexes, [5: RO(py)2C(OSnX3)] (5: R,X = Me,Cl; Et,Cl; Et,Br) or [6: MeO(py)2C(OSnCl2R′)] (R′ = Ph, Bu, CH2CH2CO2Me). In addition, halide exchange reaction between SnI4 and (5: R,X = Me,Cl) occurred to give (5: R,X = Me,I). The crystal structures of six tin(IV) derivatives indicated, in all cases, a monoanionic tridentate ligand, [RO(py)2C(O−)-N,O,N], arranged in a fac manner about a distorted octahedral tin atom. The Sn–O and Sn–N bonds lengths do not show much variation amongst the six complexes despite the differences in the other ligands at tin. |
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| Keywords: | Mononuclear Sn(IV) complexes Hemiketal-based ligands N,O,N ligands Bis(pyridin-2-yl)ketone Alkoxy boldFont" >(bis(pyridin-2-yl)methanolato complexes |
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