Abstract
In the interaction of scandium chloride hexahydrate and 2,5-pyrazinedicarboxylic acid (H2pzc) dihydrate in different solvent mixtures two novel coordination polymers are obtained under solvothermal conditions: [Sc2(dmf)2(H2O)2(pzc)3] (1) and [Sc2(H2O)2(pzc)3]·2CH3CN·H2O (2) (dmf is N,N-dimethylformamide). Crystal structures of compounds 1 and 2 are determined by single crystal X-ray diffraction and supported by elemental and thermogravimetric data and IR spectroscopy. The phase purity of the samples prepared is confirmed by powder X-ray diffraction. It is shown that the coordination environment of the scandium cation and the 2,5-pyrazinedicarboxylate ligand denticity change depending on the composition of a solvent mixture. Compound 1 has a layered structure while in the structure of 2 there is a three-dimensional framework.
Original language | English (US) |
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Pages (from-to) | 823-829 |
Number of pages | 7 |
Journal | Journal of Structural Chemistry |
Volume | 60 |
Issue number | 5 |
DOIs | |
State | Published - May 1 2019 |
Bibliographical note
Funding Information:The work was supported by RFBR grant No. 17-43-543116.
Publisher Copyright:
© 2019, Pleiades Publishing, Ltd.
Keywords
- coordination polymers
- heterocyclic ligands
- scandium
- X-ray crystallography analysis
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry