Cyclic dithiophosphate salts [Et < inf > 3 < /inf > NH] < sup > + < /sup > [(OCH < inf > 2 < /inf > CMe < inf > 2 < /inf > CH < inf > 2 < /inf > O)P(S)S] < sup > - < /sup > and [Et < inf > 3 < /inf > NH] < sup > + < /sup > [CH < inf > 2 < /inf > (6-t-Bu-4-Me-C < inf > 6 < /inf > H < inf > 2 < /inf > O) < inf > 2 < /inf > P(S)S] < sup > - < /sup >

Abstract

X-ray structures of the cyclic dithiophosphate salts [Et3NH]+[(OCH2CMe2CH2O)P(S)-(S)]- (1) and [Et3NH]+[CH2(6-t-Bu-4-Me-C6H2O)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) Å, and Z = 4. Crystal data for 2: Monoclinic, P21/c, a = 19.1112(17), b = 14.649(9), c = 22.7166(19) Å, 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.