X-ray crystal structures of [(Cy2NH2)]3[C6H3(CO2)3]·4H2O and [i-Bu2NH2][(Me3 SnO2C)2C6H3CO2]

Two new benzene tricarboxylato derivatives [(Cy2NH2)]3[C6H3(CO2)3]·4H2O (1) and [i-Bu2NH2][(Me3SnO2C)2 C6H3CO2] (2) have been synthesized and characterized by X-ray crystallography. In the solid state, compound 1 shows a three-dimensional structure involving intra- and intermolecular hydrogen bonds, whereas the X-ray structure of 2 consists of pentacoordinated Sn centers bonded to three methyl groups and two O atoms in a trans-O2SnC3 environment, bridged by oxyanions leading to a layered structure; the cation is involved in intramolecular hydrogen bonds