title: Organotin Compound Derived from 3-Hydroxy-2-formylpyridine Semicarbazone: Synthesis, Crystal Structure, and Antiproliferative Activity.
abstract: The novel diphenyltin(IV) compound [Ph(2)(HyFoSc)Sn] (2), where H(2)HyFoSc (1) is 3-hydroxy-2-formylpyridine semicarbazone, was prepared and characterized by vibrational and NMR ((1)H, (13)C) spectroscopy. The structure of [Ph(2)(HyFoSc)Sn] was confirmed by single-crystal X-ray crystallography. The doubly deprotonated ligand is coordinated to the tin atom through the enolic-oxygen, the azomethine-nitrogen, and phenolic-oxygen, and so acts as an anionic tridentate ligand with the ONO donors. Two carbon atoms complete the fivefold coordination at the tin(IV) center. Intermolecular hydrogen bonding, C-H --> pi, and pi --> pi interactions combine to stabilize the crystal structure. Compounds 1 and 2 have been evaluated for antiproliferative activity in vitro against the cells of three human tumor cell lines: MCF-7 (human breast cancer cell line), T24 (bladder cancer cell line), A549 (nonsmall cell lung carcinoma), and a mouse fibroblast L-929 cancer cell line.
authors.affiliation: Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece.
authors.forename: Joanna
authors.initials: J
authors.lastname: Wiecek
authors.forename: Dimitra
authors.initials: D
authors.lastname: Kovala-Demertzi
authors.forename: Zbigniew
authors.initials: Z
authors.lastname: Ciunik
authors.forename: Joanna
authors.initials: J
authors.lastname: Wietrzyk
authors.forename: Maria
authors.initials: M
authors.lastname: Zervou
authors.forename: Mavroudis A
authors.initials: MA
authors.lastname: Demertzis