The first coordination compound of 6-fluoronicotinate: the crystal structure of a one-dimensional nickel(II) coordination polymer containing the mixed ligands 6-fluoronicotinate and 4,4′-bipyridine

Acta Crystallographica Section E: Crystallographic Communications

Marijana Đaković¹  Mateja Pisačić¹  Boris-Marko Kukovec²  Vesna Sokol²  Nives Politeo² 

[1] Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac, 102a, HR-10000 Zagreb, Croatia;Department of Physical Chemistry, Faculty of Chemistry and Technology, University of Split, Ruđera Boškovića 35, HR-21000 Split, Croatia;

关键词: crystal structure;    nickel(ii);    6-fluoronicotinic acid;    4,4′-bipyridine;    coordination polymer;    hydrogen-bond motif;   

DOI  :  10.1107/S2056989020003023

来源: DOAJ

【 摘 要 】

A one-dimensional nickel(II) coordination polymer with the mixed ligands 6-fluoronicotinate (6-Fnic) and 4,4′-bipyridine (4,4′-bpy), namely, catena-poly[[diaquabis(6-fluoropyridine-3-carboxylato-κO)nickel(II)]-μ-4,4′-bipyridine-κ2N:N′] trihydrate], {[Ni(6-Fnic)2(4,4′-bpy)(H2O)2]·3H2O}n, (1), was prepared by the reaction of nickel(II) sulfate heptahydrate, 6-fluoronicotinic acid (C6H4FNO2) and 4,4′-bipyridine (C10H8N2) in a mixture of water and ethanol. The nickel(II) ion in 1 is octahedrally coordinated by the O atoms of two water molecules, two O atoms from O-monodentate 6-fluoronicotinate ligands and two N atoms from bridging 4,4′-bipyridine ligands, forming a trans isomer. The bridging 4,4′-bipyridine ligands connect symmetry-related nickel(II) ions into infinite one-dimensional polymeric chains running in the [1\overline{1}0] direction. In the extended structure of 1, the polymeric chains and lattice water molecules 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: octameric R88(24) and hexameric R86(16) loops.

【 授权许可】

Unknown