873450-98-7Relevant academic research and scientific papers
The first acetimino complexes of Rh(III). 4-Imino-2-methylpentan-2-amino- Rh(III) complexes through metal-assisted intramolecular aldol-type condensation of two acetimino ligands
Vicente, Jose,Chicote, Maria-Teresa,Guerrero, Rita,Vicente-Hernandez, Inmaculada,Alvarez-Falcon, Miguel M.
, p. 181 - 188 (2006)
[Rh(Cp*)Cl(μ-Cl)]2 (Cp* = pentamethylcyclopentadienyl) reacts (i) with [Au(NH=CMe2)(PPh 3)]ClO4 (1:2) to give [Rh(Cp*)(μ-Cl)(NH=CMe 2)]2(ClO4)2 (1), which in turn reacts with PPh3 (1:2) to give [Rh(Cp*)Cl(NH=CMe 2)(PPh3)]-ClO4 (2), and (ii) with [Ag(NH=CMe2)]ClO4 (1:2 or 1:4) to give [Rh(Cp*)Cl(NH=CMe2)2]ClO4 (3) or [Rh(Cp*)-(NH=CMe2)3](ClO4) 2·H2O (4·H2O), respectively. Complex 3 reacts (i) with XyNC (1:1, Xy = 2,6-dimethylphenyl) to give [Rh(Cp*)Cl(NH=CMe2)(CNXy)]ClO4 (5), (ii) with Tl(acac) (1:1, acacH = acetylacetone) or with [Au(acac)-(PPh3)] (1:1) to give [Rh(Cp*)(acac)(NH=CMe2)]ClO4 (6), (iii) with [Ag(NH=CMe2)2]ClO4 (1:1) to give 4, and (iv) with (PPN)Cl (1:1, PPN = Ph3P=N=PPh3) to give [Rh(Cp*)Cl(imam)]Cl (7·Cl), which contains the imam ligand (N,N-NH=C(Me)CH2C(Me)2NH2 = 4-imino-2-methylpentan-2-amino) that results from the intramolecular aldol-type condensation of the two acetimino ligands. The homologous perchlorate salt (7·ClO4) can be prepared from 7·Cl and AgClO 4 (1:1), by treating 3 with a catalytic amount of Ph2C=NH, in an atmosphere of CO, or by reacting 4 with (PPN)CI (1:1). The reactions of 7·ClO4 with AgClO4 and PTo3 (1:1:1, To = C6H4Me-4) or XyNC (1:1:1) give [Rh(Cp*)(imam) (PTo3)](ClO4)2·H2O (8) or [Rh(Cp*)(imam)(CNXy)](ClO4)2 (9), respectively. The crystal structures of 3 and 7-Cl have been determined.
