Crystal structure of poly[(μ2-6-methyl 6-nicotinoylpicolinate- κ4O,O’,N:N’)-(tetrafluoroborato-κ1F)silver(I)], C13H10AgBF4N2O3

Abstract

Source of materialAllreagentsand solvents obtained from commercial sources were used without further purification. Methyl 6-nicotinoylpicolinate wass ynthesized as ab y-product when we synthesized2 ,6-pyridinediylbis(3-pyridinyl)methanone following as ynthetic procedure reported [1]. At room temperature, methyl6 -nicotinoylpicolinate (24 mg, 0.1 mmol) and AgBF 4 (20 mg, 0.1 mmol) were dissolved in amixture of 3mlacetonitrile and 2ml methanol. The solution was stirred at room temperature for 3 hours. After filtration, the clear solution was left to stand in air for one week to give colourless irregular crystals of the title compound suitable for X-ray diffraction (yield 21 mg, 49% based on ligand). DiscussionAngular-shaped neat molecules bearing aC =O (ketone) hinge group have been shown to act as versatile semi-rigid linkers in construction of different metal-organic frameworks (MOFs). The examples reported in the literaturei nclude di-2-pyridinylmethanone, 2-pyridinyl-3-pyridinylmethanone, di-3-pyridinylmethanone and oligo pyridyla nalogous 2,6-pyridinediylbis(3-pyridinyl)methanone [2][3][4][5]. However, the study on the asymmetric angular-shaped ketone by changing the pyridylmoieties with different substituent groups. Herein, we report one new silver(I) complex derived from 6-nicotinoylpicolinate, an asymmetric ketone. In the title complex, the Ag(I) exhibits afive-coordination geometry with each silver(I) center surrounded by two pyridylNa tomsf rom two different 6-nicotinoylpicolinate ligands with Ag-N distances of 2.184(5) Åand 2.248(4) Å[6],one F(BF 4 -)weakly bonded at 2.606(3) Å [7] and two carbonyl oxygen atomsat2.617(5) Åand 2.630(2) Å[8]. The C=O bond length is 1.207(6) Å, the angle C(sp2)-C-C(sp2) equals 119.7(5)°. The dihedral angle between the pyridylr ings of each 6-nicotinoylpicolinate is 26.20(7)°. In the title structure, each 6-nicotinoylpicolinate ligand functions as a m 2 -bridging mode to link the Ag(I) ions to form an infinite chain structure along the a direction.Z. Kristallogr.