Assembly of organic moiety with metal-oxide cluster to generate a new three dimensional supramolecular/hydrogen bonded network based on isopolymolybdate

Abstract

A new octa-molybdate formulated as (C2H6N4)2 [β-Mo 8 O 26].4H 2O (1) has been isolated by conventional solution method and structurally characterized by single-crystal X-ray diffraction method, IR spectroscopy, UV-Vis absorption, thermogravimetric analysis and cyclic voltammetry. Compound 1 crystallizes in the Triclinic system, space group P-1 with unit cell dimensions, a = 8.348 (2) Å, b = 10.154 (2) Å, c = 10.823 (3) Å, α=68.35∘ (2), β=71.59∘ (2), ɤ =78.55∘ (2), V = 805.5 (3) Å 3, and Z = 2. The crystal structure of 1 is built up from octa-molybdate [ β-Mo 8 O 26] 4− clusters connected through hydrogen-bonding interactions into a three-dimensional supramolecular network. A new organic–inorganic hybrid material was prepared from ammonium hepta-molybdate in acidic medium by addition of 1, 2, 4-triazol-3-amine to obtain an octa-molybdate formulated as (C2H6N4)2 [β-Mo8O26].4H2O. The compound was characterized by single crystal X-ray diffraction method, IR spectroscopy, UV-Vis absorption, thermogravimetric analysis and cyclic voltammetry.