1242843-59-9Relevant academic research and scientific papers
Organotin-substituted [13]-crown-4 ethers: Ditopic receptors for lithium and cesium halides
Tagne Kuate, Alain C.,Iovkova, Ljuba,Hiller, Wolf,Schuermann, Markus,Jurkschat, Klaus
, p. 5456 - 5471 (2010/12/25)
The synthesis of the organotin-and the bis(organostannyl)methane- substituted crown ethers Ph(3-n)XnSnCH2-[13]- crown-4 (1, n = 0; 2, n = 1, X = I; 3, n = 1, X = Cl; 4, n = 1, X = F; 5, n = 2, X = I; 6, n = 3, X = I; 8, n = 3, X = Cl; 9, n = 2, X = Cl) and Ph (3-n)XnSnCH2Sn(X)nPh (2-n)CH2-[13]-crown-4 (10, n = 0; 11, n = 1, X = I; 12, n = 2, X = I; 13, n = 1, X = F; 14, n = 2, X = Cl) as well as of the ditopic complexes 8·LiCl·H2O and Ph2(SCN)SnCH 2-[13]-crown-4·LiSCN (15·LiSCN) are reported. These compounds were characterized by elemental analyses, by 1H, 13C, 19F, and 119Sn NMR spectroscopy, electrospray mass spectrometry, and in the case of 2 and 4 also by 119Sn MAS NMR spectroscopy. Single-crystal X-ray diffraction analyses reveal distorted tetrahedral configurations for the tin atoms in compounds 1, 11 (Sn2), and 12 (Sn2), whereas intramolecular O→Sn interactions (Sn-O = 2.416(2) (6) to 2.471(3) (11, Sn1) A) characterize the molecular structures of compounds 2, 6, 9, and 11 (Sn1), in which the tin atoms display distorted trigonal-bipyramidal configurations. The spatial arrangement of the Sn(1) atom in compound 12 is distorted octahedral (Sn-O = 2.497(3) and 2.649(3) A), while the tin atom in compound 8·LiCl·H2O is also trigonal bipyramidal. In the latter compound there are both intra-and intermolecular O-H...Cl hydrogen bridges. Moreover, the ditopic complexation of cesium fluoride, CsF, lithium iodide, LiI, and lithium chloride, LiCl, by compounds 4 and 6, respectively, as well as of LiCl by compounds 3 and 14, is unambiguously proved by NMR spectroscopy and electrospray mass spectrometry.
