Phenylantimony(III) dithiocyanate and the crystal structure of K[SbPh(SCN)3]

Tetramethylammonium chlorodiphenylthiocyanatoantimonate(III)

“…The angles at the coordinated N atoms are significantly different, at 154.6 (4) for Sb1-N1-C1 and 162.1 (5) for Sb2-N1a-C1a, while those between Cl À and thiocyanate are 178.7 (1) and 170.1 (1) for Cl1-Sb1-N1 and Cl1a-Sb2-N1a, respectively. The Sb-C bond distances of 2.143 (4) and 2.145 (5) Å are in agreement with those found in the polymeric structure of Ph 2 Sb(NCS) [2.133 (6) and 2.143 (6) Å ; Forster et al, 1995b], whereas the Sb-N distances of 2.365 (5) and 2.355 (6) Å are at the upper limit of those found for the bridging thiocyanates in the same compound [2.304 (5), 2.273 (6) and 2.364 (6) Å ].…”

Antimony: Organometallic ChemistryBased in part on the article Antimony: Organometallic Chemistry by Alan Berry which appeared in theEncyclopedia of Inorganic Chemistry, First Edition.

“…K[PhSb(SCN) 3 ] has a polymeric structure in which the S atoms of one SCN are in bridging positions between pairs of Sb atoms. 27 …”

Heavy Neutral and Anionic Pnictogen Thiocyanates

“…Partially substituted compounds of the type [PX 6– n (SCN) n ] − (X = F, Cl; n = 1–5) were also isolated by Dillon and Platt, however, without structure determination. , Arsenic variants of anions of the type [AsX 6– n (SCN) n ] − or [AsX 4– n (NCS) n ] − (X = halogen) are not known; however, salts bearing [As­(CH 3 SO 3 )­(NCS) 3 ] − with a methyl sulfate instead of a halide were reported in 1987 . The heavier homologues [E­(CH 3 SO 3 )­(NCS) 3 ] − (E = Sb, Bi) were described by Kapoor et al The anion [SbPh­(NCS) 3 ] − was structurally characterized in 1995 by Sowerby et al All hitherto known antimony thiocyanate species − are of the type [SbR­(NCS) 3 ] − or [Sb­(OR)­(NCS) 3 ] − (R = organic substituent). To the best of our knowledge, a pure antimony trithiocyanate could not yet be structurally characterized, although Bertazzi and Alonzo described the synthesis of [NH 4 ]­[Sb­(NCS) 4 ] (Scheme ) in 1989.…”

“…Also, relatively little is known about ionic with a methyl sulfate instead of a halide were reported in 1987. 23 The heavier homologues [E(CH 3 SO 3 )(NCS) 3 ] − (E = Sb, Bi) were described by Kapoor et al 23 The anion [SbPh(NCS) 3 ] − was structurally characterized in 1995 by Sowerby et al 24 All hitherto known antimony thiocyanate species 25−28 31,32 Following our long-standing interest in pseudohalide chemistry, 33−48 we report here in detail on the synthesis and structure of antimony and bismuth thiocyanates.…”