Pseudohalogeno metal compounds. LXXVIII - Structures of planar and tetrahedral tetrafulminato metal complexes: [N(C3H7)(4)](2) [Ni(CNO)(4)], [N(C3H7)(4)](2) [Pt(CNO)(4)], and [N(C3H7)(4)](2) [Zn(CNO)(4)] [German]

摘要

The crystals contain the tetrafulminatometallates of an ideal square planar structure ([Ni(CNO)(4)](2-), [Pt(CNO)(4)](2-)) with D-4h symmetry at the nickel and platinum atom and a tetrahedron ([Zn(CNO)(4)](2-)) with perfect T-d symmetry at the zinc atom and with linear C=-N-O ligands. The metal carbon bonds (Ni-C: 187 pm, Pt-C: 200 pm, Zn-C: 201 pm) of the metal fulminates are very close to those of the corresponding cyano complexes. In the crystals the anions ([Ni(CNO)(4)](2-), [Pt(CNO)(4)](2-), [Zn(CNO)(4)](2-)) are separated by the cations ([N(C3H7)(4)](+)) which explains the thermal stability of these compounds. [References: 33]