The reactions of SnCl4 with 4-dimethylaminobenzaldehyde pyridinoylhydrazones (α-HPdb, β-HNdb, and γ-HIdb) afford complexes [SnCl4(Pdb · H)] (I); [SnCl4(Ndb · H)] · nSolv, Solv = 0 (II), CH3OH (IIa); and [SnCl4(Idb · H)] · nSolv, Solv = 0 (III), CH3OH (IIIa), CH3CN (IIIb), DMF (IIIc). The complexes are thermally stable to 310–340°C, and desolvation occurs in ranges of 145–190°C (CH3OH), 160–230°C (CH3CN), and 160–190°C (DMF). It is found by IR spectroscopy that the complexes include the form of ligands protonated at N(Py), where the ligands are bonded to tin according to the bidentate-cyclic mode through the azomethine nitrogen atom and the oxygen atom of the oxyazine group. The molecular and crystal structures of complexes IIIb and IIIc are determined by X-ray diffraction analyses (CIF files CCDC nos. 1055248 and 1055249, respectively).
Russian Journal of Coordination Chemistry – Springer Journals
Published: Aug 1, 2015
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