catena-Poly[[cadmium-bis(μ-triethylenetetramine-κ4N,N′:N′′,N′′′)-cadmium-(μ-triethylenetetramine-κ4N,N′:N′′,N′′′)] hexafluoridogermanate]

Abstract

The title fluoridogermanate, {[Cd2(C6H18N4)3][GeF6]}n, was synthesized hydrothermally. The crystal structure comprises undulated cationic [Cd2(TETA)3]4+ chains (TETA is triethylenetetramine) propagating parallel to [101]. The central CdII atom is six-coordinated in a CdN6 set by three TETA ligands. The isolated [GeF6]2− units, serving as counter-anions, occupy the inter-chain spaces and simultaneously link adjacent chains into a three-dimensional network through extensive N—H...F hydrogen-bonding interactions. One of the ethylene bridges of one TETA ligand is disordered around a twofold rotation axis.