摘要
本文用自旋捕捉技术与ESR相结合的方法,研究四羰基二氯二铑和八种顺二羰基(二齿N-配体)铑(Ⅰ)四苯硼酸盐配合物光解的活泼中间体.结果表明,四羰基二氯二铑光解初级过程是Rh—Rh键的均裂,产生Rh中心自由基,并可为PBN,ND及TBN捕获.顺二羰基(二齿N-配体)铑(Ⅰ)四苯硼酸盐配合物光解的初级阶段,产生的都是Bph_4^-阴离子分解的Ph·自由基,且随着配体为氮杂环,苯胺环,及吡啶环,阳离子稳定性降低.
Active intermediate produced during photolysis of [Rh(CO) 2Cl]2 and eight cis-dicarbonyl (didentate N-donor ligand) Rh (Ⅰ) tetraphenyl borate [Rh(CO)2 (Chel) ] Bph4 were investigated by combining spin trapping technique with ESR. The results show that the primary process of photolysis in [Rh( CO) 2Cl]2 is homolytic cleavage of the Rh - Rh bond to produce Rhodium - centered free radicals. They can be trapped by PBN, ND and TBN. And the photolysis of cisdicarbonyl (bidentate N-donor ligand) Rhodium (Ⅰ) tetraphenyl borate produced ph radicals of Bph4 anion, and stability of the spin adducts are related to the bidentate N-donor ligand.
出处
《波谱学杂志》
CAS
CSCD
1989年第2期187-192,共6页
Chinese Journal of Magnetic Resonance
基金
国在自然科学基金资助课题
中国科学院青年奖励基金资助课题
关键词
四苯硼酸盐
羰基
铑
配合物
ESR
Spin trapping technique
Cis-dicarbonyl Rhodium complex
Radicals
ESR.
