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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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Two-dimensional lanthanide coordination polymer nanosheets for detection of FOX-7.

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Project description:A one-dimensional nickel(II) coordination polymer with the mixed ligands 6-fluoro-nicotinate (6-Fnic) and 4,4'-bi-pyridine (4,4'-bpy), namely, catena-poly[[di-aqua-bis-(6-fluoro-pyridine-3-carboxyl-ato-?O)nickel(II)]-?-4,4'-bi-pyri-dine-?2 N:N'] trihydrate], {[Ni(6-Fnic)2(4,4'-bpy)(H2O)2]·3H2O} n , (1), was prepared by the reaction of nickel(II) sulfate hepta-hydrate, 6-fluoro-nicotinic acid (C6H4FNO2) and 4,4'-bi-pyridine (C10H8N2) in a mixture of water and ethanol. The nickel(II) ion in 1 is octa-hedrally coordinated by the O atoms of two water mol-ecules, two O atoms from O-monodentate 6-fluoro-nicotinate ligands and two N atoms from bridging 4,4'-bi-pyridine ligands, forming a trans isomer. The bridging 4,4'-bi-pyridine ligands connect symmetry-related nickel(II) ions into infinite one-dimensional polymeric chains running in the [10] direction. In the extended structure of 1, the polymeric chains and lattice water mol-ecules are connected into a three-dimensional hydrogen-bonded network via strong O-H?O and O-H?N hydrogen bonds, leading to the formation of distinct hydrogen-bond ring motifs: octa-meric R 8 8(24) and hexa-meric R 8 6(16) loops.

| S-EPMC7133043 | biostudies-literature

A one-dimensional coordination polymer constructed from isatine-3-oximate and sodium.

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| S-EPMC3120341 | biostudies-literature

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