Synthesis and Characterization of Silver(I) Nitrate Complexes with 2-, 3-, and 4- Cyano- Pyridines and Anilines

摘要

Coordination compounds formed by the interaction of silver(I) nitrate with 2-, 3- and 4- cyano- pyridines and anilines have been prepared and characterized on the basis of analytical data, molar conductanoes and infrared spectral measurements down to 200 cm#x2212;1in the solid state. The complexes isolated are Ag(2-cyanopyridine)NO3and AgL2#xB7;O3, where L - 3- or 4- cyanopyridine, 2-, 3- or 4- cyanoaniline. Molar conduotanoe measurements indicate that these complexes are non-electrolytes in ethanol but 1:1 electrolytes in aqueous solutions. Infrared spectral studies show that (i) the cyano- pyridines and anilines, though potentially bidentate ligands, act as monodentate ones bonding via the pyridine ring nitrogen (cyanopyridines) or NH2nitrogen (cyanoanilines) and (ii) the nitrate groups are present as terminally bonded monodentate ligands in all the compounds except in the 2-cyanopyridine complex which is ionia. Coordination numbere and etereochemistries for ailver(1) are proposed.