Synthesis and characterization of triphenyltin(IV) 5-[(E)-2-(aryl)-1-diazenyl]-2-hydroxybenzoates. Crystal and molecular structures of Ph3Sn{O2CC6H3-p-OH[NN(C6H4-4-CH3)]} and the 2,2′-bipyridine adduct Ph3Sn{O2CC6H3-p-OH[NN(C6H4-2-CH3)]}OH2 · C10H8N2

Triphenyltin 5-[(E)-2-(aryl)-1-diazenyl]-2-hydroxybenzoates, have been prepared and characterized. Two polymorphs of a compound Ph3SnL2H (L2H = 5-[(E)-2-(4-methylphenyl)-1-diazenyl]-2-hydroxybenzoate) were isolated from the same crystallization attempt and its structure determined by X-ray crystallography. Further, the reactivity of tetrahedral Ph3SnL1H (L1H = 5-[(E)-2-(2-methylphenyl)-1-diazenyl]-2-hydroxybenzoate) towards 2,2′-bipyridine (bipy) has been investigated.