1. Synthesis and crystal structure of a one-dimensional chain-like strontium(II) coordination polymer built of N-methyldiethanolamine and isobutyrate ligands.
- Author
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Seiss, Maximilian, Schmitz, Sebastian, Borner, Martin, and Monakhov, Kirill Yu.
- Subjects
COORDINATION polymers ,CRYSTAL structure ,STRONTIUM ,LIGANDS (Chemistry) ,MOLECULAR structure ,SPACE groups - Abstract
The one-dimensional coordination polymer (I) [Sr(ib)
2 (H2 mda)]n (Hib = isobutyric acid, C4 H8 O2 , and H2 mda = N-methyldiethanolamine, C5 H13 NO2 ), namely, catena-poly[[(N-methyldiethanolamine-3O,N,O0 )strontium(II)]-di-2- isobutyrato-3O,O0:O;3O:O,O0], was prepared by the one-pot aerobic reaction of [Zr6 O4 (OH)4 (ib)12 (H2 O)]3 Hib with Sr(NO3 )2 and H2mda in the presence of MnCl2 and Et3 N in acetonitrile. The use of MnCl2 is key to the isolation of I as high-quality colorless crystals in good yield. The molecular solid-state structure of I was determined by single-crystal X-ray diffraction. Compound I crystallizes in the monoclinic space group P21/c and shows a one-dimensional polymeric chain structure. Each monomeric unit of this coordination polymer consists of a central SrII ion in the NO8 coordination environment of two deprotonated ib ligands and one fully protonated H2mda ligand. The C and O atoms of the H2mda ligand were refined as disordered over two sets of sites with site occupancies of 0.619 (3) and 0.381 (3). Compound I shows thermal stability up to 130 C in air. [ABSTRACT FROM AUTHOR]- Published
- 2021
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