摘要
C_(60)与三种二茂铁酮亚胺η~5-C_5H_5Fe[C_5H_4C(CH_3)=N—C_6H_4R-p]-η~5(laR=H,lbR=CH_3,lcR=OCH_3)在甲苯和室温下可发生电荷转移相互作用形成三种电荷转移配合物η~5-C_5H_5Fe[C_5H_4C(CH_3)=N—C_6H_4R-p]-η~5/C_(60)(2aR=H,2bR=CH_3,2cR=OCH_3).通过紫外光谱证实了它们的存在,并用Benesi-Hildebrand方程求出了2a、2b和2c的电荷转移平衡常数分别为0.769、0.928和2.353mol^-1·dm^3.鉴于它们远大于普通有机胺与C_(60)形成的电荷转移配合物的平衡常数,因此可认为在2a～2c中存在着由二茂铁核及亚胺基向C_(60)的双重电荷转移相互作用.
Three charge - transfer complexes (CTC) η5 - C5H5Fe[C5H4C(CH3)=NC6H4R - p]- η5/C60(2a R = H; 2b R = CH3; 2c R = OCH3) were formed in toluene at room temperature through the interaction between C60 and three ferrocenylketimines η5 - C5H5Fe[C5H4C(CH3) = NC6H4R - p ] - ()5(1a R = H; 1b R = CH3; 1c R = OCH3). The UV spectra of these CTC gave the evidence for their existence. The CTC formation constants of 2a, 2b and 2c at room temperature in toluene were determined to be 0. 769mol-1·dm3, 0.928mol -1·dm3 and 2.353mol-1·dm3, respectively using the Benesi - Hildebrand equation. These constants are much higher that those of CTC derived from organic amines and C60, which strongly supports the double charge- transfer interaction of C60 with both the ferrocenyl and the imine moieties in ferrocenylketimine.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1996年第3期298-303,共6页
Acta Chimica Sinica
基金
南开大学科学技术发展基金资助的课题
