Hydrothermal synthesis and structure of a novel solid material with 3-D open-framework: (NH3CH2CH2NH3)(NH3CH2CH2NH2)(3) Na-3[Co4Mo12O24(OH)(6) (H2O)(2)(HPO4)(2)(PO4)(6)]center dot 8H(2)O

摘要

A novel cobalt phosphomolybdate: (NH3CH2CH2NH3)(NH3CHCH2NH2)(3)Na-3[CO4MO12O24(OH)(6)(H2O)(2) (HPO4)(2)(PO4)(6)]. 8H(2)O 1, has been hydrothermally synthesized (200degreesC) 5 days, autogenously pressure) and characterized by IR, ESR, XPS, elemental analyses and X-ray crystallography. The crystal data: monoclinic space group C2/c, a = 12.3281(3) Angstrom, b = 21.5729(4) Angstrom, c = 26.0242(5) Angstrom, beta = 99.5401degrees(3), V = 6825(2) Angstrom(3), Z = 4, R-1 = 0.0346, wR(2) = 0.0650. The structure of compound 1 is based on Co[Mo6P4](2) units connected together via additional Co2+ ions to give a new three-dimensional framework. The interconnected void and channels in the cobalt molybdophosphate frameworks are filled with counter cations and water molecules. The magnetic property of 1 exhibits antiferromagnetic coupling interactions. (C) 2004 Elsevier Inc. All rights reserved.