咔哇二乙炔三硝基芴酮电荷转移复合物的分子结构与晶体结构

近年来,聚二乙炔的一维特性引起了人们的注意.为了探索这类给体与有机受体形成的电荷转移复合物,从而获得高电导的聚二乙炔单晶,我们采用X射线衍射法对标题复合物进行了晶体结构测定.本文主要叙述该复合物的分子结构和晶体结构.实验部分一、样品制备将82毫克咔唑二乙炔1,6-di-(N-Carbazolyl-)2,4-hexadiyne,简称DCH],126毫克三硝基芴酮2,4,7-trinitrofluorenone,简称TNF]分别溶解在25毫升和15毫升分析纯丙酮中,

MOLECULAR AND CRYSTAL STRUCTURE OF THE 2,4,7-TRINITROFLUORENONE-1.6-DI-(N-CARBAZOLYL) 2,4-HEXADIYNE CHARGE-TRANSFER COMPLEX

The molecular and crystal structure of the cbarge-transfer complex formed between 2,4,7-trinitrofluorenone (TNF) and 1,6-di-(N-carbazolyl-) 2,4-hexadiyne (DCH) has been determined from three dimensional intensity measured on a R3m/E four circle diffractometer. The complex crystallizes with one donor (DCH) and two acceptor (TNF) in a triclinic cell (P_1) of dimensions a=0.7190(1), b=1.0760(2), c=1.5438(3) nm and α=88.34(2), β=88.86(2), γ=87.92(2)°. The structure was solved by direct method using SHELXTL program. The H atoms coordinates were caculated geometrically. The 1609 statistically significant reflections were refined by “blocked cascade” least squares to a final value of R=0.073. The spearate schematic drawings of the donor and acceptor molecules with the bond lengths and angles are shown in Fig.1a and 1b. The acceptor (TNF) and donor (DCH) molecules lie in bc-planes with average distance of 0.34 nm between the molecules.