Reactivity of bis(cyclohexylammonium) 4-nitrophenylphosphate with SnMe3 Cl. X-ray structure of 4-NO2 C6 H4 PO4(SnMe3)2·H2 O

The reaction of bis(cyclohexylammonium) 4-nitrophenylphosphate with Me SnCl (1:2) under reflux in ethanol yielded the title compound 4-NO C H PO (SnMe ·H O ( ). The X-ray crystallographic analysis achieved on single crystals obtained by slow evaporation at room temperature revealed the formation of an unexpected supramolecular coordination network. The elementary building block can be viewed as two Me Sn moieties linked by a bridging 4-nitrophenylphosphate ligand. The two tin atoms are five-coordinated and describe a -Me SnO geometry in a trigonal bipyramidal arrangement. However, the Sn atoms are distinct, exhibiting two different environments. Thus, one is linked to two axial oxygen atoms from two distinct phosphato groups, whereas the other is bound to one phosphato oxygen atom and to a water molecule. From a supramolecular point of view, the combination of the tridentate binding mode of 4-NO C H PO and the additional formation of intermolecular hydrogen bonding interactions between NO /H O and PO /H O groups gives rise to a three-dimensional lattice network.