Abstract
X-ray structures of the cyclic dithiophosphate salts [Et3NH]+[(OCH2CMe2CH2O)P(S)(S)]− (1) and [Et3NH]+[CH2{6-t-Bu-4-Me-C6H4O}2P(S)S]− (2) have been determined. Crystal data for 1: Tetragonal, P42/m, a = 13.416(7), b = 13.416(2), c = 9.153(2) A, and Z = 4. Crystal data for 2 = Monoclinic, P21/c, a = 19.1112(17), b = 14.649(9), c = 22.7166(19) A, β = 102.883(7)°, and Z = 8. The six- and eight-membered rings in 1 and 2 have chair and boat-chair conformations respectively. Both of these compounds show weak N—H······S hydrogen bonds; interestingly, in 2 both two-center and three-center hydrogen bonds are observed in the solid state.
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