Silver Cyanoguanidine Nitrate Hydrate: Ag(C2N4H4)NO3·½ H2O, a Cyanoguanidine Compound Coordinating by an Inner Nitrogen Atom

Abstract

Silver(I) cyanoguanidine nitrate hydrate, Ag(C2N4H4)NO3·½H2O, was synthesized as the first cyanoguanidine solid-state complex in which monovalent Ag is coordinated through inner nitrogen N atoms. Its structure was characterized by single-crystal X-ray diffraction, crystallizing in the acentric orthorhombic space group P21212 with a = 10.670(3) Å, b = 18.236(5) Å, and c = 3.5078(9) Å. The differing chemical bondings of Ag(C2N4H4)NO3·½H2O and Ag(C2N4H4)3NO3 were compared on the basis of first-principle calculations.

Cornerstones in Contemporary Inorganic Chemistry

“…Both lithium and potassium complexes were successfully produced, and each was shown to be highly reactive, offering the possibility of using the complexes as reagents themselves for the synthesis of new low-oxidation state metal complexes, which the ligands could stabilise kinetically. Finally, in terms of coordination chemistry, Richard Dronskowski and colleagues reported a new silver guanidine complex in their communication, which includes various aspects of its solid state chemistry [5]. In fact, the silver(I) cyanoguanidine nitrate hydrate, Ag(C 2 N 4 H 4 )NO 3 • 1 /2H 2 O, represents the first example of a monovalent silver complex coordinated through the inner (as opposed to terminal) nitrogen N atoms of the cyanoguanidine ligand.…”