Photoinduced dehydrogenation reaction of CH3NH2 by NO2 in a cryogenic Ar matrix. Identification of the CH2 = NH · H2O complex
作者:Nobuaki Tanaka、Junichi Oike、Yoshizumi Kajii、Kazuhiko Shibuya、Munetaka Nakata
DOI:10.1016/0009-2614(94)01305-f
日期:1995.1
methylamine and (3) isomerization from the methylamine N-oxide to methylhydroxylamine (intramolecular hydrogen atom migration), followed by (4) dissociation into methyleneimine and water. it was confirmed by the infrared spectrum that two of the dissociation products interact with each other in the matrix cage (CH2 = NH · H2O). This reaction mechanism is also supported by the formation of CD2 = NH · HDO
使用FTIR光谱仪研究了在低温氩气基质中NO 2与甲胺(CH 3 NH 2)的可见光诱导反应。光化学产物被鉴定为亚甲基亚胺(CH 2 = NH),水和一氧化氮。该光诱导的脱氢反应,CH 3 NH 2 + NO 2 + hν →CH 2 = NH + H 2 O + NO,由以下反应顺序解释:(1)对NO 2进行光激发,(2)氧原子从激发态转移NO 2到甲胺和(3)从甲胺N-氧化物异构化为甲基羟胺(分子内氢原子迁移),然后(4)解离为亚甲基亚胺和水。通过红外光谱证实,两个解离产物在基质笼中彼此相互作用(CH 2 = NH·H 2 O)。CD 3 NH 2 / NO 2系统中CD 2 = NH·HDO的形成也支持了这种反应机理。