(2,9-Dimethyl-1,10-phenanthroline-κ(2)N,N')bis-(2-meth-oxy-benzoato-κ(2)O(1),O(1'))cadmium.

In the title compound, [Cd(C(8)H(7)O(3))(2)(C(14)H(12)N(2))], the Cd(II) ion is coordinated by two N atoms from a 2,9-dimethyl-1,10-phenanthroline (dmphen) ligand and four O atoms from two 2-meth-oxy-benzoate anions in a distorted octa-hedral environment. Two O atoms of one bidentate 2-meth-oxy-benzoate ligand are each disordered over two positions, with site-occupancy factors of 0.579 (4) and 0.

Aqua-(dicyanamido-κN)(2,9-dimethyl-1,10-phenanthroline-κN,N')(nitrato-κO,O')cobalt(II)-2,9-dimethyl-1,10-phenanthroline-water (2/1/2).

In the title compound, 2[Co(C(2)N(3))(NO(3))(C(14)H(12)N(2))(H(2)O)]·C(14)H(12)N(2)·2H(2)O, the Co(II) ion is coordinated by a bidentate 2,9-dimethyl-1,10-phenanthroline (dmphen) ligand, a bidentate nitrate anion, a water mol-ecule and a monodentate dicyan-amide group in a distorted octa-hedral geometry. One uncoordinated dmphen mol-ecule is situated on a crystallographic twofold axis and the asymmetric unit is completed by one water mol-ecule. In the crystal, mol-ecules form a one-dimensional framework in the [001] direction through O-H⋯N and O-H⋯O hydrogen bonds.

[Theoretical study on structure and vibrational spectra of M+ AsF6- (M=Li, Na, K, Rb and Cs) contact ion pairs].

The present paper reports the possible geometries and vibrational spectra of AsF6- anion and M+ AsF6- (M+ = Li+, Na+, K+, Rb+ and Cs+) contact ion pairs. It was shown that the tridentate C3v structure of M+ AsF- was preferred over the monodentate and bidentate geometry. In the tridentate structure, the symmetry of AsF6- in the coordination is lowered because of the presence of M+, and its structural parameters and vibrational modes largely differ from its original octahedral structure.

Aqua-(2,9-dimethyl-1,10-phenanthroline-κN,N')bis-(2-hydroxy-benzoato-κO)manganese(II) 2,9-dimethyl-1,10-phenanthroline hemisolvate.

In the asymmetric unit of the title complex, [Mn(C(7)H(5)O(3))(2)(C(14)H(12)N(2))(H(2)O)]·0.5C(14)H(12)N(2), the Mn(II) ion is coordinated by a bidentate 2,9-dimethyl-1,10-phenanthroline (dmphen) mol-ecule, one water mol-ecule and two monodentate 2-hydroxy-benzoate anions in a distorted trigonal-bipyramidal geometry. The OH group of the 2-hydroxy-benzoate anion is disordered over two positions with site-occupancy factors of 0.

(2,9-Dimethyl-1,10-phenanthroline-κN,N')bis-(2-hydroxy-benzoato-κO)copper(II).

The Cu(II) atoms in the two independent mol-ecules of the title compound, [Cu(C(7)H(5)O(3))(2)(C(14)H(12)N(2))], are each coordinated by a bidentate 2,9-dimethyl-1,10-phenanthroline (dmphen) mol-ecule and two monodentate 2-hydroxy-benzoate anions in a distorted tetra-hedral geometry. The crystal packing is stabilized by intra-molecular hydrogen bonding and π-π inter-actions between the dmphen rings of neighboring mol-ecules, with distances between their ring planes of 3.5670 (4) and 3.

(2,9-Dimethyl-1,10-phenanthroline-κN,N')(4-hydroxy-benzoato-κO,O')(nitrato-κO)copper(II).

In the title compound, [Cu(C(7)H(5)O(3))(NO(3))(C(14)H(12)N(2))], the Cu(II) ion is five-coordinated in a slightly distorted square-pyramidal geometry by one O atom of a nitrate anion, two O atoms of a 4-hydroxy-benzoate anion, and two N atoms from a bidentate 2,9-dimethyl-1,10-phenanthroline (dmphen) ligand. In the crystal structure, inversion-related mol-ecules are linked into dimers by O-H⋯O hydrogen bonds. The packing is further stabilized by π-π inter-actions involving the benzene rings of the dmphen and hydroxy-benzoate units, with centroid-centroid distances of 3.

(2,9-Dimethyl-1,10-phenanthroline-κN,N')bis-(2-hydroxy-benzoato)-κO;κO,O'-cobalt(II).

In the title compound, [Co(C(7)H(5)O(3))(2)(C(14)H(12)N(2))], the Co(II) ion is five-coordinated by two N atoms from one 2,9-dimethyl-1,10-phenanthroline (dmphen) ligand and three O atoms from two 2-hydroxy-benzoate anions in a distorted trigonal bipyramidal geometry. The carboxyl-ate group of one of the two 2-hydroxy-benzoate anions is monodentate with a normal Co-O distance [1.9804 (18) Å], while the other is bidentate with two longer Co-O bonds [2.

Bis(benzoato-κO,O')(2,9-dimethyl-1,10-phenanthroline-κN,N')cobalt(II).

In the title compound, [Co(C(7)H(5)O(2))(2)(C(14)H(12)N(2))], the Co(II) ion is located on a twofold rotation axis and is chelated by a 2,9-dimethyl-1,10-phenanthroline (dmphen) ligand and two benzoate anions in a distorted octa-hedral geometry. The crystal packing is stabilized by π-π inter-actions between parallel dmphen ligands of neighbouring mol-ecules, with a face-to-face distance of 3.411 (2) Å.

Bis(μ-3-hydroxy-benzoato-κO,O':O)bis-[aqua-(3-hydroxy-benzoato-κO,O')(1,10-phenanthroline-κN,N')lead(II)] monohydrate.

In the centrosymmetric binuclear title complex, [Pb(2)(C(7)H(5)O(3))(4)(C(12)H(8)N(2))(2)(H(2)O)(2)]·H(2)O, each Pb atom is eight-coordinated in a PbO(6)N(2) environment by two N atoms from the 1,10-phenanthroline (phen) ligand, five carboxylate O atoms from four 3-hydroxy-benzoate anions and one O atom from the coordinated water mol-ecule in a distorted bicapped trigonal-prismatic geometry. The benzoate groups coordinate each Pb(II) atom in two different ways. Two benzoate ions behave as bidentate ligands to the Pb atom, and another benzoate ion bridges the Pb atoms, forming a binuclear structure.

Erratum: catena-Poly[[(2,9-dimethyl-1,10-phenanthroline-κN,N')lead(II)]-di-μ-2-hydroxy-benzoato-κO,O:O;κO:O,O]. Corrigendum.

A reference in the paper by Xuan & Zhao [Acta Cryst. (2007), E63, m2678] is replaced.[This corrects the article DOI: 10.