X-ray Analysis of Liquid 1-Methylnaphthalene Structure at 293 K

The paper reports results of the X-ray diffraction structural studies of liquid 1-methylnaphthalene, C$\text{}_{10}$H$\text{}_{7}$-CH$\text{}_{3}$ at 293 K, using Mo K$\text{}_{α}$ radiation of the wavelength λ=0.71069 A. The interpretation of the results was carried out using the reduction method of Blum and Narten. Experimental distribution of X-ray scattered intensity was compared with theoretical results predicted for a proposed model of 1-methylnaphthalene molecule. The electron-density radial-distribution function was calculated and some intra- and intermolecular distances in liquid 1-methylnaphthalene were determined. The structural data obtainable by X-ray analysis for liquid 1-methylnaphthalene are discussed. X-ray structural analysis was applied to determine the packing coefficient of 1-methylnaphthalene molecules. The electron-density radial-distribution function 4πr$\text{}^{2}$ ∑$\text{}_{j,k}^{n}\overline{K}\text{}_{j}$[ρ$\text{}_{k}$(r) — ρ$\text{}_{0}$] was calculated and some intra- and intermolecular distances in liquid 1-methylnaphthalene were determined. The structural data obtainable by X-ray analysis for liquid 1-methylnaphthalene are discussed. X-ray structural analysis was applied to determine the packing coefficient of 1-methylnaphthalene molecules.