Thermally Induced Symmetry and Disorder: The Low-Temperature Crystal Structure of Diaquadichlorodimethyltin·15-crown-5

Article type: Research Article

Authors: Yap, Glenn P.A. | Amini, Mostafa M. | Ng, Seik W. | Counterman, Anne E. | Rheingold, Arnold L.

Affiliations: University of Delaware, Department of Chemistry and Biochemistry, Newark, DE 19716, U.S.A. | University of Tehran, Department of Chemistry, Iran | University of Malaya, Institute of Advanced Studies, 59100 Kuala Lumpur, Malaysia

Note: [] Correspondenceauthor (e-mail: [email protected])

Abstract: The conformation of the crown ether in diaquadichlorodimethyltin·15-crown-5 has been verified by a low-temperature X-ray diffraction study. At −40°C, crystalline (CH3)2SnCl2·2H2O·15-crown-5, C12H30Cl2O7Sn, exists in the monoclinic P21/c space group with a = 9.259(6), b = 17.072(7), c = 13.406(4) Å, β = 108.15(4)°; ρ = 1.570 g cm3; Z = 4; Nobs = 2076; Rf = 7.92% The study corrects the atom identification errors found in the previously reported room-temperature structure, which resulted from ambiguities arising from dynamic disorder.

DOI: 10.1080/13583149612331338677

Journal: Main Group Chemistry, vol. 1, no. 3, pp. 359-363, 1996