Abstract
A new cobalt(II) compound with the formula [Co(5-Br-pyc)(2,2′-bipy)(H2O)(Cl)]·2H2O (1·H2O) (5-Br-Hpyc = 5-bromo-pyridine-2-carboxylic acid, 2,2′-bipy = 2,2′-bipyridine) has been hydrothermally synthesized and well characterized. The X-ray single-crystal diffraction analysis showed that 1⋅2H2O has crystallizes in the monoclinic system, space group P21/c (no. 14). The Co(II) center was octahedrally bonded by one bidentate chelate 5-Br-pyc anion and one 2,2′-bipy, one water molecule as well as one chloride anion to form the mononuclear structure of 1⋅2H2O. Complex 1⋅2H2O forms a 3D network through abundant O–H⋅⋅⋅O hydrogen bonds and π⋅⋅⋅π stacking interactions. Notably, the 5-Br-Hpyc ligand was in situ generated by decarboxylation of the 3-bromo-pyridine-2,6-dicarboxylic acid (3-Br-H2pydc) precursor selectively on 2-position under hydrothermal conditions. The magnetic properties, the Hirshfeld surface structure and the synthetic process for 1⋅2H2O have been carefully described and discussed.
Funding source: Key scientific research projects in colleges
Award Identifier / Grant number: 21A150036
Funding source: Universities of Henan province
Award Identifier / Grant number: 23A150002
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Author contributions: Jun-Xia Li: Methodology, conceptualization, data curation, software, writing-original draft, writing-review and editing. Shuai Ge: Formal analysis. Yi-Jing Lu: Writing draft. Xiao-Jie Xu: Software, validation. Chang Liu: Data curation. Shi-Hui Li: Conceptualization, resources, writing-review and editing.
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Research funding: This work was supported by the key scientific research projects in colleges and universities of Henan province (No. 21A150036 and 23A150002).
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Conflict of interest statement: The authors declare that they have no conflicts of interest.
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Code availability: Not applicable.
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