state. The solution complexes are characterized by charge-transfer optical absorptions at lambda(m) 364 and 540 nm in CH(2)Cl(2) for 1ao/TCNE and 1ado/TCNE, respectively. These complexes are weakly bound, with K(f) values of 0.5-3.0 M(-)(1). Crystals of (1ao)(2)/TCNE and 1ado/TCNE are isolable, and their structures have been determined by X-ray diffraction. Local donor-acceptor (DA) interactions between
反式1,1'-偶氮降
冰片烷(1)的N-氧化物和N,N'-二氧化物(1ao和1ado)与TCNE在溶液和固态下缔合。溶液配合物的特征是分别在1ao / TCNE和1ado / TCNE的CH(2)Cl(2)中在lamb
DA(m)364和540 nm处进行电荷转移光学吸收。这些复合物是弱结合的,K(f)值为0.5-3.0 M(-)(1)。(1ao)(2)/ TCNE和1ado / TCNE的晶体是可分离的,其结构已通过X射线衍射确定。发现π偶极子供体与电子贫乏的TCNE之间存在局部供体-受体(
DA)相互作用。(1ao)(2)/ TCNE的晶体由离散的
DAD三元组组成,其中1ao氧比另一个(C(2),C)更接近TCNE的一个烯烃C原子(C(1),2.86Å)。 3.07Å)。OC(1)-C(2)角为87度,偶氮氧化物分子平面垂直于TCNE的分子平面。1ado / TCNE晶体由延伸的-D
ADA-