The six-membered rings exhibit slightly distorted chair, extremely distorted chair and half-chair conformation respectively, and the five-membered ring exhibits an envelope conformation. 其中六元环分别呈现微扭曲的椅式构象、严重扭曲的椅式构象及半椅式构象;
And come up with the design ideas for the dissertation based on these. ( 2) Successfully synthesized fourteen compounds containing six-member ring structure in a chair conformation of carbazole and triphenylamine derivatives. 设计、合成十四种含有椅式构象六元环的咔唑衍生物和三苯胺衍生物。