Author： Grigoriev E. Yashina N. Petrosyan V. Lorberth J. Massa W. Wocadlo S.
Publisher： Taylor & Francis Ltd
ISSN： 1024-1221
Source： Main Group Chemistry, Vol.2, Iss.1, 1997-05, pp. : 73-78
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Abstract
Tin-119 and phosphorus-31 NMR spectra have been recoreded for three tin tetrahalide complexes with tetraethyl propylenediphosphonate SnX 4 · L, where L = (EtO) 2 P(O)CH 2 CHMeP(O) (OEt) 2 , X = Cl (1); X = Br(2); X = I(3). Each complex exists in solution in the form of only one isomer with two different phosphoryl units coordinated at tin. The crystal structure of SnCl 4 · L (1) has been determined. The complex has a monomeric 7-membered chelate structure with octahedral environment at tin. It crystallizes in the monoclinic space group P2 1 /n with a = 9.531(2) Å, b = 16.556(3)Å, c = 14.634(3) Å, β = 98.73(3)°, Z = 4, d calc = 1.678 Mg/m 3 , N obs = 2813, R = 0.045.
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