Abstract
In the complex cation of the title salt, [Co(C12H8N2)3](C10H5O8)2·H2O, the CoII cation is situated on a twofold rotation axis and is coordinated in a distorted octahedral manner by six N atoms from three chelating 1,10-phenanthroline (phen) ligands. In the crystal, the non-coordinating 2,4,5-tricarboxybenzoate anions interact with each other via O—H...O hydrogen bonds, generating a two-dimensional network parallel to (100). Adjacent sheets are connected by waterO—H...Ocarboxylate hydrogen bonds, resulting in a three-dimensional network structure that surrounds the complex cations.
Highlights
In the complex cation of the title salt, [Co(C12H8N2)3](C10H5O8)2ÁH2O, the CoII cation is situated on a twofold rotation axis and is coordinated in a distorted octahedral manner by six N atoms from three chelating 1,10-phenanthroline ligands
Adjacent sheets are connected by waterO—HÁ Á ÁOcarboxylate hydrogen bonds, resulting in a three-dimensional network structure that surrounds the complex cations
The CoII atom lies on a twofold rotation axis, which bisects the phen ligand containing atom N3; the water molecule of crystallization lies on the same rotation axis
Summary
Benzene-1,2,4,5-tetracarboxylic acid has been widely used to construct materials with metal–organic framework structures, because it possesses different coordination modes depending on the four carboxyl groups that can be completely or only partially deprotonated, but it can act as a hydrogen-bond acceptor or donor. 1,10-Phenanthroline (phen) has been well employed as a chelating ligand in coordination chemistry and in the assembly of metal–organic frameworks. The asymmetric unit of the title compound comprises one half of the complex [Co(phen)3]2+ cation, one benzene-1,2,4,5-. The CoII atom lies on a twofold rotation axis, which bisects the phen ligand containing atom N3; the water molecule of crystallization lies on the same rotation axis. The CoII atom is coordinated in a distorted octahedral manner by six N atoms from three chelating 1,10-phenanthroline (phen) ligands (Table 1). Dihedral angles between the least-squares planes of the benzene ring and the carboxy/carboxylate groups are 15.6 (3) (C27/O5/O6), 4.7 (2) (C26/O3/O4), 3.3 (3) (C28/O3/O4) and 87.9 (3) (C25/O1/O2). Intramolecular O—HÁ Á ÁO hydrogen bonding is observed for one of the three carboxylic groups to an adjacent carboxylate O atom (O7— H3Á Á ÁO6; Table 2)
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
