title: Ionothermal synthesis of four new nickel thiophosphate anions: [Ni(P2S8)2]2–, [Ni(P3S9)(P2S8)]3–, [Ni(P3S9)2]4–, and [(NiP3S8)4(PS4)]7–.
abstract: Four new nickel thiophosphate anions have been isolated as 1-ethyl-3-methylimidazolium (EMIM) salts: [EMIM](2)[Ni(P(2)S(8))(2)] (1), [EMIM](3)[Ni(P(3)S(9))(P(2)S(8))] (2), [EMIM](4)[Ni(P(3)S(9))(2)] (3), and [EMIM](7)[(NiP(3)S(8))(4)(PS(4))] (4). Single crystals of each were prepared by ionothermal reaction of the elements in [EMIM][BF(4)]. 1 can also be obtained from [EMIM][CF(3)SO(3)]. In all four anions, Ni atoms are octahedrally coordinated and P atoms are tetrahedrally coordinated. In the anion found in 1, two tridentate 1,3-P(2)S(8)(2-) ligands are cis to each other. The anion in 2 contains two different tridentate thiophosphate ligands, 1,3-P(2)S(8)(2-) and P(3)S(9)(3-), whereas the anion in 3 consists of two P(3)S(9)(3-) ligands coordinated to the central Ni atom. The anion in 4 is complex, consisting of four NiP(3)S(8)(-) clusters surrounding a central PS(4) tetrahedron; within the NiP(3)S(8)(-) groups, one P atom is directly bound to Ni. The discovery of these four new compounds demonstrates the versatility of ionothermal methods for the synthesis of novel thiophosphates.
authors.affiliation: Department of Chemistry, Lake Forest College, 555 North Sheridan Road, Lake Forest, Illinois 60045, United States. cody@lakeforest.edu
authors.forename: Jason A
authors.initials: JA
authors.lastname: Cody
authors.forename: Kenneth B
authors.initials: KB
authors.lastname: Finch
authors.forename: Gilbert J
authors.initials: GJ
authors.lastname: Reynders
authors.forename: Grant C B
authors.initials: GC
authors.lastname: Alexander
authors.forename: Hyung G
authors.initials: HG
authors.lastname: Lim
authors.forename: Christian
authors.initials: C
authors.lastname: Näther
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Bensch