title: Tetra-aqua-bis-[4-(pyrazin-2-ylsulfanylmeth-yl)benzoato]manganese(II) dihydrate.
abstract: The title compound, [Mn(C(12)H(9)N(2)O(2)S)(2)(H(2)O)(4)]·2H(2)O, has been synthesized with a flexible asymmetrical bridging ligand, 4-(pyrazin-2-ylsulfanylmeth-yl)benzoic acid (Hpztmb). The Mn(II) ion exhibits a centrosymmetric octa-hedral geometry involving two carboxyl-ate O atoms of two different pztmb ligands and four O atoms of four coordinated water mol-ecules. The packing shows a three-dimensional supra-molecular network via O-H⋯O and O-H⋯N hydrogen bonds and π-π stacking inter-actions [centroid-centroid distances = 3.884 (8) and 4.034 (8) Å] between the benzene ring of one pztmb anion and the pyrazine ring of an adjacent anion.
authors: College of Chemistry and Chemical Engineering, Pingdingshan University, Pingdingshan 467000, Henan, People's Republic of China.
authors: Fu-An
authors: FA
authors: Li
references: Chem Commun (Camb). 2003 Oct 21;(20):2580-1
references: 14594290
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677