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

H. Drozdowski Non-Crystalline Materials Division, Institute of Physics, A. Mickiewicz University, Grunwaldzka 6, 60-780 Poznań 2, Poland

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Received: March 14, 2000; revised version September 25, 2000

The paper reports results of the X-ray diffraction structural studies of liquid 1-methylnaphthalene, C10H7-CH3 at 293 K, using Mo Kα 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 4πr2 ∑nj,k Kj[ρk(r) — ρ0] 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.

DOI: 10.12693/APhysPolA.98.691 PACS numbers: 61.25.Em