Studies in Werner clathrates. Part 4. Structures of tetrakis(4-ethylpyridine)di-isothiocyanatonickel(II) and its clathrates with p-, m-, and o-xylene, carbon disulphide, and carbon tetrachloride

Abstract

Two structures of the Werner complex [Ni(NCS)₂(4Et-py)₄](4Et-py = 4-ethylpyridine) in its non-porous α phase and the structures of its clathrates with p-, m-, and o-xylene, carbon disulphide, and carbon tetrachloride as the guest molecules have been elucidated. In all the structures the host molecules have octahedral co-ordination and a ‘propeller’ conformation. The shape and size of a typical cavity has been determined from volume calculations. The packing efficiencies of all structures and the mass spectra of two of the clathrates are discussed.