title: Identification of a near-linear supramolecular water dimer, (H2O)2, in the channel of an inorganic framework material.
abstract: Supramolecular water dimer, (H(2)O)(2), is fundamentally important. During the course of our work on polyoxometalates, we have been able to identify the existence of hydrogen-bonded, near-linear water dimers in the "sinuous" channels of an inorganic framework material, Na(3)(n)(H(2)O)(6)(n)[Al(OH)(6)Mo(6)O(18)](n)() x 2nH(2)O, 1. The three-dimensional network structure of 1 in the solid state is assembled by the Anderson type of heteropolyanions as building blocks sharing sodium cations. Vibrational spectroscopy, X-ray powder diffraction technique, TG-DSC analyses, and single-crystal X-ray structure analysis have characterized this host-guest system, 1. Crystal data for 1: triclinic space group Ponemacr;, a = 12.0618 (3) A, b = 13.1570 (4) A, c = 14.1563 (4) A, alpha = 80.7850 (10) degrees, beta = 75.2660 (10) degrees, gamma = 68.9210 (10) degrees, and Z = 3.
authors.affiliation: School of Chemistry, University of Hyderabad, India.
authors.forename: Sathi
authors.initials: S
authors.lastname: Manikumari
authors.forename: Vaddypally
authors.initials: V
authors.lastname: Shivaiah
authors.forename: Samar K
authors.initials: SK
authors.lastname: Das