Syntheses and characterization of organostannoxanes derived from 2-chloroisonicotinic acid: Tetranuclear and hexanuclear

Three types of ladder-like organostannoxanes have been synthesized and characterized. The structural analyses of 1, 2 and 4 reveal them to be tetranuclear, possessing two different ladder-like structures. In contrast, complex 5 is a hexanuclear complex containing mixed tri- and dimethyltin units.