Abstract
The molecular structure of dibenzyl has been determined to an accuracy of about 0.01A by using extensive X-ray data in three-dimensional Fourier syntheses to refine the approximate atomic parameters originally derived by Robertson. The three formally single-carbon bonds joining the benzene rings have lengths of 1.50, 1.48 and 1.50A and make angles of 115° with each other. The departure from the standard length of 1.54A is discussed in relation to the analogous systems of polyisoprenes and 1.5 dienes where related effects have been observed. The dimensions of the benzene rings also reflect the unusual character of the acyclic carbon bonds, two of the aromatic bond lengths being 1.39A and the other four 1.37A. The molecule, although possessing a centre of symmetry, is not absolutely symmetrical, since the central CH2— CH2bond is inclined at 70.5° to the plane of the benzene rings. This is ascribed to the influence of intermolecular forces.
Reference18 articles.
1. B atem an & Jeffrey 1943 Nature 152 446.
2. B atem an & Jeffrey 1945
3. B atem an & K och 1944 J . Chem.Soc. p. 211.
4. J .Chem. Soc. p. 600.
5. a Am er;M in .,1942
Cited by
50 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献