Tin-119m Moessbauer, infrared, nuclear magnetic resonance, equilibrium, and thermodynamic measurements on complexes of dimethyltin dichloride with substituted 1,10-phenanthrolines and 2,2'-bipyridines

Synthesis, properties and crystal structural characterization of diorganotin(IV) derivatives of 2‐mercapto‐6‐nitrobenzothiazole

“…11 The increase in the coupling constant indicates the higher coordination number of tin. The magnitudes of the tin(IV)-proton coupling constants for complexes 2 and 3 are different from those reported in the literature for the starting tetracoordinate diorganotin(IV) halides, 12,13 but they are smaller with respect to those indicated for hexacoordinate undissociated organotin(IV) complexes containing nitrogendonor ligands; 14,15 this suggests a partial dissociation of our complexes in solution.…”

Synthesis, characterization and hydrolytic behavior of new bis(2-pyridylthio)acetate ligand and related organotin(IV) complexes

“…The tincarbon coupling constant 1 J(Sn, 13 C) is 660 Hz; on the basis of LockartsÕs equation [26], the Me-Sn-Me angle is estimated to 134°, suggesting a skewed penta-coordination around the tin atom. The 119 Sn chemical shifts of diorganotin(IV) derivatives 3, 5 and 7, at À182.3, À205.8 and À310.0 ppm, respectively, are in accordance with those of five-coordinated diorganotin(IV)halides complexes involving S-, O-or N-donors [28][29][30]. The 119 Sn chemical shifts of the monoorganotin(IV) derivatives 2, 4 and 6, at À483.5, À499.8 and À480.3, respectively, provide an additional support for five-coordinated tin atoms.…”

Synthesis and characterization of new organotin(IV) complexes with polyfunctional ligands

“…The 119 Sn chemical shifts of diorganotin(IV) derivatives 4, 8 and 11 are in accordance with those of fiveor six-coordinated diorganotin(IV) halides complexes involving S-, O-or N-donors [31,[39][40][41][42] (Figs. 3 and 4).…”