Title of article :
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
Author/Authors :
Politeo, Nives Department of Physical Chemistry - Faculty of Chemistry and Technology - University of Split, Croatia , Pisačić, Mateja Department of Chemistry - Faculty of Science - University of Zagreb, Horvatovac, Croatia , Đaković, Marijana Department of Chemistry - Faculty of Science - University of Zagreb, Horvatovac, Croatia , Sokol, Vesna Department of Physical Chemistry - Faculty of Chemistry and Technology - University of Split, Croatia , Kukovec, Boris-Marko Department of Physical Chemistry - Faculty of Chemistry and Technology - University of Split, Croatia
Abstract :
A one-dimensional nickel(II) coordination polymer with the mixed ligands
6-fluoronicotinate (6-Fnic) and 4,40 -bipyridine (4,40 -bpy), namely, atenapoly[diaquabis(6-fluoropyridine-3-carboxylato-O)nickel(II)]--4,40
-bipyridine-2 N:N0 ] trihydrate], {[Ni(6-Fnic)2(4,40 -bpy)(H2O)2]3H2O}n, (1), was
prepared by the reaction of nickel(II) sulfate heptahydrate, 6-fluoronicotinic
acid (C6H4FNO2) and 4,40 -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 4,40 -bipyridine ligands, forming a trans
isomer. The bridging 4,40 -bipyridine ligands connect symmetry-related nickel(II)
ions into infinite one-dimensional polymeric chains running in the [110]
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—HO and O—HN hydrogen bonds, leading to the formation
of distinct hydrogen-bond ring motifs: octameric R8 8 (24) and hexameric R8
6 (16) loops
Keywords :
crystal structure , nickel(II) , 6-fluoronicotinic acid , 4,4′-bipyridine , coordination polymr , hydrogen-bond motif
Journal title :
Acta Crystallographica Section E: Crystallographic Communications
