連二亞硝酸銀

連二亞硝酸銀是一種離子化合物，化學式為Ag
2N
2O
2，或表示為(Ag+
)₂[ON=NO]²⁻。它是難溶於水和有機溶劑（如DMF、DMSO）的亮黃色固體。^[1]^[2]^[3]

製備[編輯]

該化合物最早於1848年被報道。^[4]

它可由連二亞硝酸鈉和硝酸銀在水溶液中反應得到：^[2]

Na₂N₂O₂ + 2AgNO₃ → Ag₂N₂O₂ + 2NaNO₃

過量的硝酸銀會生成棕色或黑色沉澱。^[1]^[2]

鈉汞齊還原硝酸銀也能得到連二亞硝酸銀。^[5]

2 AgNO₃ + 2 NaNO₂ + 4 Na[Hg] + 2 H₂O → Ag₂N₂O₂ + 2 NaNO₃ + 4 NaOH + 4 Hg^[6]

^ ^1.0 ^1.1 ^1.2 Trambaklal Mohanlal Oza, Rajnikant Hariprasad Thaker (1955), "The Thermal Decomposition of Silver Hyponitrite". Journal of the American Chemical society, volume 77, issue 19, pages 4976–4980. doi:10.1021/ja01624a007
^ ^2.0 ^2.1 ^2.2 G. David Mendenhall (1974), "Convenient synthesis of silver hyponitrite". Journal of the American Chemical society, volume 96, issue 15, page 5000. doi:10.1021/ja00822a054
^ Wiberg, Egon; Holleman, Arnold Frederick. Inorganic Chemistry. Elsevier. 2001. ISBN 0-12-352651-5.
^ (1848), "On the formation of hyponitrite of silver". Philosophical Magazine Series 3, XIII. Intelligence and miscellaneous articles, volume 33 (1848), issue 219, page 75. doi:10.1080/14786444808646049
^ Masatsugu Sekiguchi, Michio Kobayashi, Hiroshi Minato (1974), "Reactions between Acyl Halides and Silver Hyponitrite". Bulletin of the Chemical Society of Japan, volume 45, issue 9, pages 2932-2934. doi:10.1246/bcsj.45.2932
^ 無機化學叢書第四卷氮磷砷分族. 科學出版社. pp 122-123. 5.5 連二亞硝酸