119Sn Mössbauer spectral studies in Sn(IV) and organotin(IV) substituted oxinates

Synthesis, Spectroscopic and Voltammetric Studies of a Novel Dioxovanadate(V) 8-Hydroxyquinoline Complex

“…The exact band positions are listed in Table II. The free ligand was yellow in solution; it presented four absorption maxima, in agreement with literature data [15,27], which were assigned as follows: ! Ã ð max ¼ 249, 302, 315 nmÞ; n !…”

Diphenyltin(IV) complexes of the 5-[(E)-2-(aryl)-1-diazenyl]quinolin-8-olates: Synthesis and multinuclear NMR, 119Sn Mössbauer, electrospray ionization MS, X-ray characterization and assessment of in vitro cytotoxicity

“…The diphenyltin(IV) complexes of the 5-[(E)-2-(aryl)-1-diazenyl]quinolin-8-ol ligand (LH) could be prepared by reacting stoichiometric amounts of Ph 2 SnCl 2 and LH in a suitable solvent under conditions described by Blake et al [21] and Ghuge et al [4]. These reactions proceeded smoothly but results into a complex mixture in both the cases that could be separated with great difficulty.…”

“…Consequently, some of the earlier publications have dealt with the coordinating behavior of such reagents towards organotin [4][5][6], transition metals [7], mixed organotintransition metals [7], mercury [8] and uranium [9]. Among the organotin(IV) compounds, bis{5-[(E)-2-(phenyl)-1-diazenyl]-8-quinolinolato}diphenyltin(IV), [Ph 2 Sn(L 1 ) 2 ] has been studied by IR, UV-Vis, 1 H NMR [5] and 119m Sn Mö ssbauer [4] 2 ], (where Ox = deprotonated quinolin-8-ol) [10] suggests that they have the same structure. To resolve these issues, firstly the X-ray structure of [Ph 2 Sn(Ox) 2 ] has been determined.…”

Crystal Structure and Spectroscopic Behaviour of Oxoetoxo-bis(5,7-dichloro-8-hydroxyquinolinato)vanadium(V)

“…The two absorption bands at higher energies (210 and 258 nm in acetonitrile and 214 and 246 nm in ethanol) are assigned to intraligand transitions, probably superimposed by the O 3 V charge transfer involving the double bonded oxo group [13,16,20]. The other two bands are related to ligand-to-metal charge transfer transitions involving the organic ligand.…”