2-Cyano-2-isonitrosoacetamide and its Ag(I) complexes. Silver(I) cyanoximate as a non-electric gas sensor.

The 2-cyano-2-isonitrosoacetamide, NC-C(N=OH)-C(O)NH(2) (1), its Na(+), Cs(+) salts and four silver(I) complexes with N-donor ligands were synthesized and characterized using a variety of techniques including IR, UV-vis spectroscopy, solid state photoluminescence, X-ray analysis, and solution electrical conductivity. All four reported here Ag(I) complexes were crystallographically characterized and revealed completely different structures. Thus, the combination of chelate and bridging function of the cyanoxime anion in Ag{NC-C(N=O)-C(O)NH(2)} (complex 6) leads to a unique layered 2D coordination polymer of silver(i) with pronounced argentophilic interactions at 3.