论文部分内容阅读
本文研究了[Co(NH_3)_4CO_3]Cl、[Co(en)_2CO_3]C1分别与NH_4SCN在100℃发生的固相取代反应.[Co(NH_3)_4CO_3]Cl与NH_4SCN反应生成trans-[Co(NH_3)_4(NCS)_2]~+;[Co(en)_2CO_3]Cl与NH_4SCN反应先生成cis-[Co(en)_2(NCS)_2]~+,然后转化成trans-(Co(en)_2(NCS)_2]~+。采用气相色谱、红外光谱、X粉末衍射和核磁共振法对相应反应体系及其产物进行了测试,推测反应按S_(N~2)机理进行。
The reaction of [Co (NH_3) _4CO_3] Cl and [Co (en) _2CO_3] C1 with NH_4SCN respectively at 100 ℃ was studied in this paper. [Co (NH_3) _4CO_3] Cl reacts with NH_4SCN to form trans- [Co [Co (en) _2CO_3] Cl reacts with NH_4SCN to form cis- [Co (en) _2 (NCS) 2] ~ +, _2 (NCS) _2] ~ +. The corresponding reaction systems and their products were tested by gas chromatography, infrared spectroscopy, X-ray powder diffraction and nuclear magnetic resonance. It was presumed that the reaction was carried out according to the S_ (N ~ 2) mechanism.