Mercury oxycyanide is a chemical compound, an organomercury derivative. It is both explosive and highly toxic, producing symptoms of both mercury and cyanide poisoning following exposure.[2][3]
^Šćavnićar S (January 1963). "The crystal structure of mercury(II) oxycyanide". Zeitschrift für Kristallographie - Crystalline Materials. 118 (1–6). doi:10.1524/zkri.1963.118.16.248. S2CID96021764.