4167-90-2Relevant articles and documents
NMR study of mono- and dilithium derivatives of alkyl and arylstannanes
Chugunov,Troitskii,Nosov,Egorov,Nefedov
, p. 2327 - 2329 (2004)
Element-centered mono- and dianions of alkyl- and arylstannanes were studied by NMR spectroscopy. The 13C and 119Sn NMR chemical shifts for the dianions R2SnLi2 (R = Ph, Et) were measured for the first time.
Attachment of chelating ligand pockets to tinorganyl moieties
Barth, Beatrix E. K.,Harms, Klaus,Dehnen, Stefanie
, p. 2406 - 2411 (2015/04/27)
Several approaches have been undertaken to realize the synthesis of a new tinorganyl compound with a 2,2′,6′,2″-terpyridine moiety. A synthesis pathway consisting of five steps with an overall yield of 51 was successful in producing Ph3Sn(CH2)3OPhttpy [HOttpy = 2,6-bis(2′-pyridyl)-4′-(p-hydroxyphenyl)pyridine], and insight has been gained into (partial) halogenation reactions with this unprecedented tinorganyl compound. Halogenation with hydroiodic acid produced a new dinuclear complex cation that resulted from head-to-tail coordination of two monocations. Furthermore, synthesis and yields of already known intermediates have been optimized. The products were analyzed and identified by 119Sn NMR, 1H NMR, and 13C NMR spectroscopy and ESI mass spectrometry, as well as by means of single-crystal X-ray diffraction. A new compound Ph3SnR, comprising a 2,2′,6′,2″-terpyridine-functionalized ligand R, has been synthesized in a five-step procedure. On attempting to halogenate this compound, a partially iodinated derivative was obtained that forms a head-to-tail connected dimer in the salt [(PhISn(CH2)3OPhttpy)2](I3)2 with the terpyridine units acting as chelating ligands.
Syntheses and structures of 3-stannylcholest-5-ene species
Buchanan, Heather J.,Cox, Philip J.,Doidge-Harrison, Solange M. S. V.,Howie, R. Alan,Jaspars, Marcel,Wardell, James L.
, p. 3657 - 3664 (2007/10/03)
The compounds, 3α- and 3β-triphenylstannylcholest-5-ene, 1 and 2 respectively, have been prepared stereospecifically in reactions of Ph3SnLi with cholesteryl methane- or toluene-p-sulfonates, and of Ph3SnCl with the Grignard reagent from cholesteryl chloride, respectively. Complete 1H and 13C NMR spectral assignments for 1 have been obtained using HMBC and HMQC techniques: these have been used to aid the 13C NMR spectral assignments for 2 and 3α- and 3β-(InPh3-nSn)cholest-5-enes (n = 1-2) (9-12). Crystal structure determinations of 3α-(IPh2Sn)cholest-5-ene 9 and 3α-(I2PhSn)cholest-5-ene 10 indicate distorted tetrahedral geometries about the tin centres in both compounds. The Sn-I bond lengths are 2.731(5) A in 9 and between 2.6979(12) and 2.7173(12) A in 10. Despite the similarity in the values (ca. 60°) of the dihedral angles, Sn-C(3)-C(2)-C(1) [C(1) aliphatic carbon] and Sn-C(3)-C(4)-C(5) [C(5) olefinic carbon], the values of 3J[119Sn-13C(1)] are about twice the 3J[119Sn-13C(5)] values in each of 1, 9 and 10; in contrast, 3J[119Sn-13C(1)] and 3J[119Sn-13C(5)] values are essentially the same in each of 2, 11 and 12 [Sn-C(3)-C(2)-C(1) and Sn-C(3)-C(4)-C(5) ca. 180°].
