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Synthesis and crystal structure of a one-dimensional chain-like strontium(II) coordination polymer built of N-methyldi-ethano-lamine and isobutyrate ligands.

ABSTRACT: The one-dimensional coordination polymer (I) [Sr(ib)₂(H₂mda)] _n (Hib = isobutyric acid, C₄H₈O₂, and H₂mda = N-methyldi-ethano-lamine, C₅H₁₃NO₂), namely, catena-poly[[(N-methyldi-ethano-lamine-κ³ O,N,O')strontium(II)]-di-μ₂-isobutyrato-κ³ O,O':O;κ³ O:O,O'], was prepared by the one-pot aerobic reaction of [Zr₆O₄(OH)₄(ib)₁₂(H₂O)]·3Hib with Sr(NO₃)₂ and H₂mda in the presence of MnCl₂ and Et₃N in aceto-nitrile. The use of MnCl₂ is key to the isolation of I as high-quality colorless crystals in good yield. The mol-ecular 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 Sr^II 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.

SUBMITTER: Seiss M

PROVIDER: S-EPMC8382055 | biostudies-literature |

REPOSITORIES: biostudies-literature

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One-dimensional ladder gallium coordination polymer.

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