abstract
The tetramethylammonium salts (NMe(4))(2)[MO(2)(2,3-Hdhb)(2)]center dot 2H(2)O and (NMe(4))(2)[MO(2)(3,4-Hdhb)(2)]center dot 6H(2)O (M = Mo, W; Hdhb = monoprotonated form of 2,3- or 3,4-dihydroxybenzoic acid, 2,3-H(3)dhb or 3,4-H(3)dhb) were prepared and their crystal structures determined. The structure of [Mg(H(2)O)(6)](NMe(4))(4)-[MoO(2)(3,4-dhb)(3,4-Hdhb)](2)center dot 13H(2)O, obtained by the recrystallization of (NMe(4))(2)[MoO(2)(3,4-Hdhb)(2)] in the presence of magnesium ions, is also reported. The supramolecular interactions of the five structures are discussed in detail concerning the hydrogen bonding patterns involving complexes and water molecules of crystallization. (C) 2009 Elsevier Ltd. All rights reserved.
keywords
OXYGEN-ATOM TRANSFER; ACTIVE-SITE MODELS; X-RAY-DIFFRACTION; 2,3-DIHYDROXYBENZOIC ACID; MOLYBDENUM(VI) COMPLEXES; INTRACELLULAR SURVIVAL; PROTOCATECHUIC ACID; BRUCELLA-ABORTUS; OXIDATIVE STRESS; FUNCTIONAL-MODEL
subject category
Chemistry; Crystallography
authors
Monteiro, B; Cunha-Silva, L; Gago, S; Klinowski, J; Paz, FAA; Rocha, J; Goncalves, IS; Pillinger, M
our authors
Filipe Alexandre Almeida Paz
Principal Researcher
Isabel Maria de Sousa Gonçalves
Associate Professor
João Rocha
Full Professor
Martyn Pillinger
Principal Researcheracknowledgements
We are grateful to the Fundacao para a Ciencia e a Technologica (FCT, Portugal), POCI 2010, OE and FEDER (Project PTDC/QUI/71198/2006) and for specific funding towards the purchase of the single-crystal diffractometer. B.M., L.C.-S. and S.G. thank the FCT for the PhD (SFRH/BD/24717/2005) and post-doctoral (SFRH/BPD/25269/2005 and SFRH/BPD/3489512007) Grants, respectively.