Search

Copyright of Giornale di Medicina Militare is the property of Difesa Servizi S.p.A. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Giornale di Medicina Militare is the property of Difesa Servizi S.p.A. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The asymmetric unit of the title compound consists of two crystallographically independent, but structurally identical, [HP2Mo5O23]5− anions, ten guanidinium cations and five water molecules. Each singly protonated diphosphopentamolybdate(VI) anion retains the typical geometry of a ring of five edge-sharing MoO6 octahedra [Mo...Mo = 3.3265 (8)-3.4029 (10) Å], except for one corner-sharing link [Mo...Mo = 3.6642 (7) and 3.6826 (8) Å]. Two capping PO4 tetrahedra share corners with the five octahedra. Despite being surrounded by an extensive network of hydrogen bonds, predominantly from the guanidinium cations, short P-O-H...O=P contacts [O...O = 2.519 (7) and 2.457 (7) Å] associate the anions into infinite columns generated by the c-glide. In addition to their heavy involvement in hydrogen bonding, with all N-H donors being utilized, the guanidinium cations assemble into extensive π-stacked columns with an average interplanar spacing of 3.53 Å. [ABSTRACT FROM AUTHOR]