2,9-Dimethyl-1,10-phenanthrolin-1-ium (6-carb-oxy-4-hy-droxy-pyridine-2-carboxyl-ato-?O,N,O)(4-hy-droxy-pyridine-2,6-dicarboxyl-ato-?O,N,O)zincate(II) 2.35-hydrate: a proton-transfer compound.

ABSTRACT: In the title compound, (C(14)H(13)N(2))[Zn(C(7)H(3)NO(5))(C(7)H(4)NO(5))]·2.35H(2)O, the Zn(II) atom is coordinated by two N atoms and four O atoms from the carboxyl-ate groups of the 4-hy-droxy-pyridine-2,6-dicarboxyl-ate and 6-carb-oxy-4-hy-droxy-pyridine-2-carboxyl-ate ligands, forming a distored octa-hedral geometry. In the anion, the two pyridine rings are inclined to one another by 87.75?(13)°. Two types of robust O-H?O hydrogen bond synthons, viz. R(2) (2)(16) and R(6) (6)(42), link the anions to form a two-dimensional network parallel to the bc plane. Furthermore, O-H?O, N-H?O, N-H?N and weak C-H?O hydrogen bonds connect the two dimensional networks, forming a three-dimensional structure. In the crystal, there are also C-H?? and ?-? inter-actions [centroid-centroid distances of 3.5554?(18) and 3.7681?(18)?Å], and C=O?? inter-actions [O?centroid distance = 3.117?(2)?Å] present. One of the three crystal water molecules shows an occupancy of 0.35.

SUBMITTER: Derikvand Z 

PROVIDER: S-EPMC3254305 | biostudies-other | 2012 Jan

REPOSITORIES: biostudies-other