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有关键合异构体[Co(NH_3)_5NO_2]Cl_2和[Co(NH_3)_5ONO]Cl_2的合成方法已有过报导,但各有差异,同时又都强调了必须在浓盐酸介质中才能析出沉淀. 我们在不同酸度和不同温度下的实验中,发现影响形成不同键合异构体的主要因素是温度,即在冷却条件下形成的是-ONO配位的异构体,而在加热条件下生成的是-NO_2配位的异构体.酸度只影响沉淀析出的速度和量的多少.酸度大,沉淀析出得快,且量也多.
Synthetic methods for the bonded isomers [Co (NH_3) _5NO_2] Cl_2 and [Co (NH_3) _5ONO] Cl_2 have been reported, but they all differ, and at the same time they all emphasize the necessity of precipitation in concentrated hydrochloric acid In our experiments at different acidities and temperatures, we found that the main factor affecting the formation of different bonding isomers is the temperature, ie the formation of -ONO coordination isomers under cooling conditions, Produced is -NO_2 coordination isomers. Acidity only affects the precipitation rate and amount of precipitation. Acidity, precipitated quickly, and the amount of more.