The complex (m,h2:h2-L)AuCl22, L2- = N,N'-bis(a-picolinoyl)hydrazido(2-), as obtained directly or through ring-opening reaction of 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine. Inorganic Chemistry Communications, (7)2:220--223, 2004. [PUMA: dinuclear complex;gold picolinoylhydrazine opening structure;pyridyltriazine crystal complex ring gold prepn structure]