Chao-Jun Du

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The title complex, [Co(C(4)H(5)O(6))(2)(H(2)O)(2)]·2H(2)O, contains a Co(II) ion, two single deprotonated tartrate anions, two coordinated water mol-ecules and two lattice water mol-ecules. The coordination geometry of the Co(II) ion is a distorted octa-hedron with two O atoms from two coordinated water mol-ecules occupying cis positions in the equatorial(More)
In the title compound, [Fe(C 5 H 3 N 2 O 4) 2 (H 2 O) 2 ], the Fe II ion lies on an inversion centre and is coordinated by two N and two O atoms from two 5-carboxy-1H-imidazole-4-carboxylate ligands and two water molecules in a distorted octahedral geometry. An intramolecular O—HÁ Á ÁO hydrogen bond occurs. In the crystal, intermolecular N—HÁ Á ÁO and O— HÁ(More)
In the title compound, C(8)H(10)N(2)O(4)·H(2)O, the imidazole N atom is protonated and one of the carboxyl-ate groups is deprotoned, forming a zwitterion. An intra-molecular O-H⋯O hydrogen bond occurs. The crystal structure is stabilized by inter-molecular N-H⋯O and O-H⋯O hydrogen bonds. In addition, inter-molecular N-H⋯O and O-H⋯O hydrogen bonds link the(More)
In the title compound, C(15)H(11)NO(4), the dihedral angle formed by the benzene ring and the essentially planar 2-benzofuran ring system is 55.93 (3)°. In the crystal, inter-molecular O-H⋯O hydrogen bonds link pairs of mol-ecules, generating centrosymmetric R(2) (2)(8) ring motifs. These dimeric units are connected via N-H⋯O hydrogen bonds, forming C(6)(More)
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