作者:Philip J. Barker、Stephen R. Stobart、Paul R. West
DOI:10.1039/p29860000127
日期:——
Cyclopentadienyl radicals C5H4X˙(X = H or Me) generated in various solvents either chemically or photochemically from Hg(C5H4X)2 have been trapped using nitrosodurene (ND), pheny(t-butyl)nitrone (PBN), and 3,4-dihydro-2,2-dimethyl-2H-pyrrole N-oxide (DMPO) to afford radical adducts identifiable by e.s.r. spectroscopy. For X = H the ND adduct (1) gives rise to a six-line e.s.r. spectrum in toluene having
环戊二烯基Ç 5 ħ 4 X(X = H或Me)在各种溶剂中通过化学或光化学产生从汞柱(C 5 H ^ 4 X)2使用nitrosodurene(ND),苯基已经被困(叔丁基)硝酮( PBN)和3,4-二氢-2,2-二甲基-2 H-吡咯N-氧化物(DMPO)提供自由基加合物,可通过esr光谱法鉴定。对于X = H,ND加合物(1)在具有(N)ca的甲苯中产生六线esr光谱。13.5 G和一个(H)ca。6.5 G.相反,在CHCl 3中光解产生(1)伴随着带有四线esr光谱的物质(7)的出现,该物质被分配给H˙/ ND(氨氧基)加合物。对于X = Me,以ND作为自旋阱,解析了对应于最大自旋密度[C(1)和C(3),C(4)]点上加合物形成的重叠esr光谱。还描述了类似的自旋捕获自C 5 Me 5 H的自由基。