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metal-organic compounds
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In the title compound, {[Ca(C7H4FO2)2(H2O)2]·0.5C10H8N2}n, the CaII atom is coordinated by eigth O atoms from four 2-fluorobenzoate ligands and two water molecules, resulting in a distorted CaO8 square-antiprismatic coordination environment. The 2-fluorobenzoate ligand bridges two symmetry-related CaII atoms, giving rise to a chain structure extending along [100]. The distances between the Ca atom and its two symmetry-related counterparts are 4.054 (2) and 4.106 (2) Å. The polymeric chains are connected by classical O—H
N hydrogen bonds into a layer structure parallel to (010). The layers are connected by non-classical C—HF hydrogen bonds into a three-dimensional supramolecular structure. O—HO and C—HO interactions also occur. The uncoordinated 2,2′-bipyridine molecule is located on a centre of symmetry at the mid-point of the bond between the two heterocycles. One of the two benzene rings is disordered over two sites with occupancy factors of 0.60 and 0.40.
N hydrogen bonds into a layer structure parallel to (010). The layers are connected by non-classical C—HF hydrogen bonds into a three-dimensional supramolecular structure. O—HO and C—HO interactions also occur. The uncoordinated 2,2′-bipyridine molecule is located on a centre of symmetry at the mid-point of the bond between the two heterocycles. One of the two benzene rings is disordered over two sites with occupancy factors of 0.60 and 0.40.metal-organic compoundsOpen access
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In the centrosymmetric title compound, [Cd(C7H4NO4)2(C3H4N2)2(H2O)2], the CdII atom, located on an inversion center, is coordinated by two N atoms and four O atoms in an octahedral geometry. The internal cohesion of the molecule is enhanced by an intramolecular O—HO hydrogen bond. Intermolecular O—HO and C—HO hydrogen bonds and π–π contacts [centroid–centroid distance = 3.6549 (2) Å] define two-dimensional networks parallel to (001), which are further connected by weaker C—HO interactions into a weakly connected three-dimensional supramolecular framework.
O hydrogen bond. Intermolecular O—HO and C—HO hydrogen bonds and π–π contacts [centroid–centroid distance = 3.6549 (2) Å] define two-dimensional networks parallel to (001), which are further connected by weaker C—HO interactions into a weakly connected three-dimensional supramolecular framework.
