X-ray diffraction study of structure and molecular correlations in liquid 1,3,5triphenylbenzene at 473 K
Abstract
The structure of 1,3,5triphenylbenzene C6H3(C6H5)3 at 473 K was investigated using the X-ray diffraction method. The measurements of scattered radiation intensity were performed in a wide range of wave vector. For the first time the theoretically predicted model of the structure 1,3,5triphenylbenzene was experimentally confirmed. The model of short range arrangement of the molecules was proposed. The determined mean, smallest mutual distances between molecules of liquid studied are: r1=4.30 A, r2=5.30 A, r3=5.40 A. The most probable value of the packing coefficient of the molecules was found to be k=0.53. This value falls in the range of k values permissible for liquid phase. The liquid studied is a major aromatic compound. The study of structure of 1,3,5triphenylbenzene may be helpful in the explanation of the mechanism of intermolecular interactions in synthetic polymers.