oxidations at a platinum bead electrode in CH2Cl2. The first process is reversible for all of the complexes and corresponds to the formation of a monocation with a [Rh2]3+ core. The second step is fully reversible only for (1), (3, L = PPh3), and (5, diene = nbd), and for the first two of these complexes a third reversible oxidation wave is also observed. The paramagnetic monocations (3+, L = PPh3 or
循环伏安法显示[Rh 2(CO)4(μ-L')2 ] [ 1,L'= RNNNR,R =
对甲苯基;2,L'= R'NC(Me)NR',R'= Ph],[Rh 2(CO)2 L 2(µ-RNNNR)2 ](3,L = PPh 3或CNBu t),[Rh 2(CO)2(PPH 3)L- μ-R'NC(ME)NR'} 2 ](4,L = CO),
铑[Rh 2(η 4 -二烯)2(μ-RNNNR)2 ] [ 5,二烯= nbd(norborna-2,5-二烯)或cod(环八-1,5-二烯)]和[Rh 2(CO)3(CNBu t)(µ-RNNNR)2 ](6)在CH 2 Cl 2中的
铂珠电极上经历至少两个扩散控制的单电子氧化。第一个过程对于所有络合物都是可逆的,并且对应于带有[Rh 2 ] 3+核的单阳离子的形成。第二步仅对于(1),(3,L = PPh 3)和(5)是完全可逆的,二烯= nbd)