The Metal Ammine Cyanide Aromatics Clathrates. I. The Preparation and Stoichiometry of the Diamminemetal(II) Tetracyano-niccolate(II) Dibenzene and Dianiline

Benzene and aniline clathrates of metal-complex host lattices with a general formula of M(II)(NH3)2Ni(CN)4·2G, in which M(II) was nickel, copper, or cadmium, and G, benzene or aniline as the guest molecule, were prepared. The stoichiometry was established through the analytical data and the structural information obtained from the powder X-ray diffractometric data. They are tetragonal with reasonable lattice parameters except for Cu(NH3)2Ni(CN)4·2C6H5NH2, which may be estimated to be orthorhombic or monoclinic. The host lattices of all the compounds have almost the same space character. The occupation of divalent metal M(II) at the octahedral site of the metal-complex host lattice was proved through the magnetic data.