Yotnoi B, Rujiwatra A. Crystal structure and characterization of a new lanthanide coordination polymer, [Pr
2(pydc)(phth)
2(H
2O)
3]·H
2O.
Acta Crystallogr E Crystallogr Commun 2024;
80:228-231. [PMID:
38333134 PMCID:
PMC10848983 DOI:
10.1107/s2056989024000872]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 01/24/2024] [Indexed: 02/10/2024]
Abstract
A new lanthanide coordination polymer, poly[[tri-aqua-bis-(μ4-phthalato)(μ3-pyridine-2,5-di-carboxyl-ato)dipraseodymium] monohydrate], {[Pr2(C7H3NO4)2(C8H4O4)(H2O)3]·H2O}n or {[Pr2(phth)2(pydc)(H2O)3]·H2O}n, (pydc2- = pyridine-2,5-di-carboxyl-ate and phth2- = phthalate) was synthesized and characterized, revealing the structure to be an assembly of di-periodic {Pr2(pydc)(phth)2(H2O)3}n layers. Each layer is built up by edge-sharing {Pr2N2O14} and {Pr2O16} dimers, which are connected through a new coordin-ation mode of pydc2- and phth2-. These layers are stabilized by inter-nal hydrogen bonds and π-π inter-actions. In addition, a three-dimensional supra-molecular framework is built by inter-layer hydrogen-bonding inter-actions involving the non-coordinated water mol-ecule. Thermogravimetric analysis shows that the title compound is thermally stable up to 400°C.
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