Crystal structure of sodium strontium monothiophosphate nonahydrate, NaSr[PO3S] · 9H2O

Abstract

Source of materialTrisodium monothiophosphate, Na 3 [PO 3 S], was synthesized from aqueous solutions of NaOH and PSCl 3 according to [1]. A solution of sodium strontium monothiophosphate nonahydrate was obtained by adding SrCl 2 · 6H 2 O (1.50 g, 5.626 mmol) to a solution of Na 3 [PO 3 S] (1.01 g, 5.626 mmol) in 40 mL distilled water at 40°C. Slowly cooling at room temperature yielded cubeshaped colorless crystals of the title compound within some days. Experimental detailsThe H atom parameters were refined freely except those which did not converge. The latter ones were fixed, positional parameters at the parameters found from Fourier difference maps and U iso at 0.05 Å 2 . [SrO 9 ]polyhedra are connected through common edges completing the three-dimensional framework structure (figure, top). Equal lengths of the P-O bonds of the [PO 3 S] 3-anion indicate an ideal C 3v symmetry. P-S (2.035(4) Å) and P-O (1.524 (5) Discussion

Soft−Hard Acid−Base Interactions: Probing Coordination Preferences of Sulfur and Selenium in Mixed Chalcophosphates in the Family APbPS4−xSex(A = K, Rb, Cs;x= 0−4)

“…These are transparent in the near- and mid-IR ranges and were found to exhibit a nonlinear optical second harmonic generation response at 1 μm that is approximately twice that of the benchmark material AgGaSe 2 . Less established is the modification of the chalcophosphate anions, for example, by mixing group 16 elements Q in [PQ 4 ] 3− anions or other chalcophosphate derivatives. , Whereas the thiophosphate anions [PO x S 4− x ] 3− ( x = 1−3) can be readily obtained by the treatment of P 4 S 10 or PSCl 3 with aqueous NaOH solutions, − similar reactions of P 2 Se 5 resulted in the formation of salts containing the water-stable anion [P 2 Se 6 ] 4− . These findings prompted the investigation of related mixed thio-/selenophosphate anions.…”

“…10 Less established is the modification of the chalcophosphate anions, for example, by mixing group 16 elements Q in [PQ 4 ] 3anions or other chalcophosphate derivatives. 11,12 Whereas the thiophosphate anions [PO x S 4-x ] 3-(x = 1-3) can be readily obtained by the treatment of P 4 S 10 or PSCl 3 with aqueous NaOH solutions, [13][14][15][16][17][18][19] ] 4-. 20 These findings prompted the investigation of related mixed thio-/selenophosphate anions.…”