Cis-trans isomerization in the syntheses of ruthenium cyclam complexes with nitric oxide

详细信息    查看全文

• 作者：Robson da Silva Vidal^a ; Fá ; bio Gorzoni Doro^a ; ^b ; Kleber Queiroz Ferreira^a ; ^b ; Zê ; nis Novais da Rocha^b ; Eduardo Ernesto Castellano^c ; Sofia Nikolaou^d ; Elia Tfouni^a ; ^{eltfouni@usp.br}
• 关键词：Ruthenium ; Cyclam ; Nitrosyl ; Nitric oxide ; Cis&ndash ; trans isomerization ; Nitrite
• 刊名：Inorganic Chemistry Communications
• 出版年：2012
• 出版时间：January, 2012
• 年：2012
• 卷：15
• 期：Complete
• 页码：93-96
• 全文大小：300 K

文摘

The cis to trans isomerizations during the syntheses of trans-[Ru(NO)(OH)(cyclam)](PF₆)₂, from cis-[RuCl₂(cyclam)]Cl, and [Ru(NO)Cl(cyclam)] (PF₆)₂, from cis-[RuCl₂(dmso)₄], are reported. The novel trans-[Ru(NO)(OH)(cyclam)](PF₆)₂ complex was characterized by X-ray crystallography and vibrational infrared and nuclear magnetic resonance spectroscopies. The Ru-N-O bond angle (176.75o) and ¦Í(NO) (1835 cm^?#xA0;1) suggest a nitrosonium character for this hydroxo complex. The crystal and molecular structure of trans-[Ru(NO)Cl(cyclam)](ClO₄)₂¡¤2 H₂O is also reported. Results presented here support the cis-trans isomerization observed for the first time with ruthenium cyclam complexes.