Crystal structure of catena-poly[[silver(I)-?-N-(pyridin-2-ylmeth-yl)pyridine-3-amine-?(2) N:N'] tri-fluoro-methane-sulfonate].

ABSTRACT: In the asymmetric unit of the title compound, {[Ag(C11H11N3)]CF3SO3} n , there are two Ag(I) atoms, two N-(pyridine-2-ylmeth-yl)pyridine-3-amine ligands (A and B) and two CF3SO3 (-) anions. Both Ag(I) atoms are bridged by two pyridine N atoms from two symmetry-related A or B ligands, forming right- or left-handed helical chains, respectively. The Ag(I) atom of the right-handed helical chain adopts a slightly distorted linear coordination geometry [N-Ag-N = 170.69?(14)°], while that of the left-handed helical chain adopts a bent geometry [N-Ag-N = 149.42?(14)°]. Both helical chains have the same pitch length [10.8437?(5)?Å], propagate along the b-axial direction and are alternately arranged via Ag?Ag [3.0814?(5)?Å] and ?-? stacking inter-actions [centroid-centroid distances = 3.514?(3) and 3.487?(3)?Å], resulting in the formation of a two-dimensional supra-molecular network extending parallel to the ab plane. Weak Ag?O [2.861?(4), 2.617?(3), and 2.624?(4)?Å] and Ag?F [3.017?(3)?Å] inter-actions as well as N-H?O and C-H?O, C-H?N and C-H?F hydrogen-bonding inter-actions occur between the helical chains and the anions.

SUBMITTER: Moon SH 

PROVIDER: S-EPMC4257320 | biostudies-other | 2014 Nov

REPOSITORIES: biostudies-other