Bredenkötter Björn, Henne Stefan, Volkmer Dirk
Ulm University, Institute of Inorganic Chemistry 2, Materials and Catalysis, Albert-Einstein-Allee 11, Ulm, Germany.
Chemistry. 2007;13(35):9931-8. doi: 10.1002/chem.200700915.
The formation of supramolecular host-guest complexes of fullerene (C(60)) and two novel tribenzotriquinacene based hosts (5 a and 5 b) was investigated in solution and in the solid state. Stability constants for 1:1 and 2:1 complexes were obtained from spectroscopic (UV/Vis, (1)H NMR) titration experiments. Association constants of K(1)=(2908+/-360) L mol(-1) and K(2)=(2076+/-300) L mol(-1) for C(60)/5 a, and K(1)=(5608+/-220) L mol(-1) and K(2)=(673+/-160) L mol(-1) for C(60)/5 b were obtained. Single crystal X-ray structural analysis of compound C(60) subset5 b3 toluene revealed that a molecule of C(60) was located at short van der Waals contact distances in the open pre-organised cavity of the rigid host. The supramolecular complex created resembles an engineered nanosized ball joint and represents the first member for a future nanomechanics construction kit.
在溶液和固态中研究了富勒烯（C(60)）与两种新型基于三苯并三喹啉的主体（5a和5b）形成超分子主客体复合物的情况。通过光谱（紫外可见光谱、(1)H核磁共振）滴定实验获得了1:1和2:1复合物的稳定常数。对于C(60)/5a，缔合常数K(1)=(2908±360) L mol(-1)和K(2)=(2076±300) L mol(-1)；对于C(60)/5b，缔合常数K(1)=(5608±220) L mol(-1)和K(2)=(673±160) L mol(-1)。化合物C(60)·5b·3甲苯的单晶X射线结构分析表明，一个C(60)分子位于刚性主体开放的预组织空腔中短范德华接触距离处。所形成的超分子复合物类似于一个设计的纳米级球窝关节，代表了未来纳米力学构建套件的首个成员。
