2-DIMENSIONAL OPEN-FRAME HOST STRUCTURE OF THE INCLUSION COMPOUND [CD(TENH)(2)(NI(CN)(4))(2)]CENTER-DOT-4C(6)H(5)NH(2) (TEN=1,4-DIAZABICYCLO[2.2.2]OCTANE)

In the title inclusion compound, bis(1-azonia-4-azabicyclo[2.2.2]octane)cadmium(II) bis[tetracyanonic-kelate(II)]-aniline (1/4), [Cd(C6H13N2)(2) {Ni(CN)4}(2)].-4C6H7N, the host contains Cd2+ and [Ni(CN)(4)](2-) in a ratio of 1:2. The two crystallographically independent [Ni(CN)(4)](2-) anions behave as bidentate bridging ligands, spanning the Cd2+ cations with the N atoms of the cyano groups in trans positions along both the a and b axes, building up a two-dimensional network [Cd(tenH)(2){NC-Ni(CN)(2)-CN-}(2)](n) (ten= 1,4-diazabicyclo [2.2.2]octane). Two unidentate tenH ligands coordinate to the Cd in axial positions, the other N-atom end being protonated. The guest aniline molecules accommodated in the interlayer space are hydrogen bonded via the amino groups to the non-bridged N atoms of the cyano groups and the protonated W-atom end of the tenH ligand.