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Papers by Kleber Ferreira
Inorganic Chemistry Communications, 2012
The cis to trans isomerizations during the syntheses of trans-[Ru(NO)(OH)(cyclam)](PF 6 ) 2 , fro... more The cis to trans isomerizations during the syntheses of trans-[Ru(NO)(OH)(cyclam)](PF 6 ) 2 , from cis-[RuCl 2 (cyclam)]Cl, and [Ru(NO)Cl(cyclam)] (PF 6 ) 2 , from cis-[RuCl 2 (dmso) 4 ], are reported. The novel trans-[Ru(NO) (OH)(cyclam)](PF 6 ) 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 ν(NO) (1835 cm − 1 ) suggest a nitrosonium character for this hydroxo complex. The crystal and molecular structure of trans-[Ru(NO)Cl(cyclam)] (ClO 4 ) 2 ·2 H 2 O is also reported. Results presented here support the cis-trans isomerization observed for the first time with ruthenium cyclam complexes.
Inorganic Chemistry Communications, 2012
The cis to trans isomerizations during the syntheses of trans-[Ru(NO)(OH)(cyclam)](PF 6 ) 2 , fro... more The cis to trans isomerizations during the syntheses of trans-[Ru(NO)(OH)(cyclam)](PF 6 ) 2 , from cis-[RuCl 2 (cyclam)]Cl, and [Ru(NO)Cl(cyclam)] (PF 6 ) 2 , from cis-[RuCl 2 (dmso) 4 ], are reported. The novel trans-[Ru(NO) (OH)(cyclam)](PF 6 ) 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 ν(NO) (1835 cm − 1 ) suggest a nitrosonium character for this hydroxo complex. The crystal and molecular structure of trans-[Ru(NO)Cl(cyclam)] (ClO 4 ) 2 ·2 H 2 O is also reported. Results presented here support the cis-trans isomerization observed for the first time with ruthenium cyclam complexes.