Synthesis, infrared, and X-ray study of di-µ-thiocyanato-1χN,S′:2χN′,S-bis-[bis(2,2′-bipyridine)di-isothiocyanatobismuth(III)]: a case of eight-co-ordinated bismuth

Abstract

The synthesis, i.r., and X-ray structural characterization of the complex [ Bi (CNS),(bipy),], (bipy = 2,2'-bipyridine) are described. Crystals are triclinic, space group PT, Z = 2, a = 9.935(1),

Co-ordination complexes of the bismuth(III) thiolate Bi(SC6F5)3

“…1558( 4) 1480(3) -413(5) -2590(4) -2875(4) -989(4) 4254( 5) 4530( 6) 3650( 5) 2557( 6 11) 6536( 13) 5625( 12) 4730( 12) 4507( 8) 4253( 12) 441 5(9) 55 1 9( 1 0) 6567( 12) 7857( 1 1) 8040 ( 10) 107( 5) -1079( 6) -1931(6) -1579(8) -425 (8) 408( 6) 31 l( 5) 404(5) -552(7) -1652(6) -1786(5) -818(6) 329 l( 5) 3824( 6) 3960( 8) 3529( 6) 3003( 7) 2900 (6) Y 320 ( 14) 171 5 ( 10) 2293( 9) 3319( 8) 3490( 6) 2789 ( 10) 1947 ( 11) 433( 14) -83 (10) -1068( 10)…”

“…Crystallisation of 12 from thf-hexane yields crystals of F,),(p-OC,F,),(thf)4] 12b, which differ in whether hexane of crystallisation is present or not, both of which contain two thf ligands per bismuth centre but which have six-co-ordinate bismuth centres as a result of bridging OC6F5 groups in contrast to the lack of bridging SC,F, groups in 8-10. This feature is again evident in the structure of the complex 5) 4655( 5) 2382( 5) 1641( 6) 2274( 6) 2546( 6) 2149( 6) 1332( 7) 977( 5 ) -142(4) -1315(5) -1386( 5) -247 (6) 928( 4) 2907(5) 3 184( 5) 4384( 5) 5261( 5) 5038( 6) 3636( 4) 2542( 5) 4047( 5) 3293( 9) 4441 (11) z 3038( 1) 3773( 2) 1569( 1) 2025( 2) 6008(4) 537 l(5) 1 244( 5) 2951( 5) 472 1 ( 6) 6670( 7) 8030( 5) 7425( 5) 5452( 5) 336 1 (3) 3288( 5 -987( 5) 987( 5) 4449(3) 241 l( 5) 5238( 4) 5870( 9) 6926( 7) 302 ( 7) Atom C( 14) C( 15 12) 3293( 9) 3369( 5) 2746 (6) 1988 (7) 181 3 (7) 2407 (8) 3 166( 7) 4101( 11) 5244( 9) 529...…”

Diorganobismuth(III) compounds with the pendant arm 2-(Me2NCH2)C6H4 ligand - Isothiocyanate, trifluoracetate and nitrate

“…The axial positions are occupied by electronegative atoms and the equatorial ones by carbon atoms of the aromatic groups, as was also observed in the polymeric [Ph 2 Bi(m-SCN)] n [14] or [Ph 2 Bi(m-O 2 CCF 3 )] n [41]. Taking into account all weaker intramolecular bismuth-nitrogen and bismuth-oxygen interactions per Bi (1) (2) 3.210 (11) Bi(1)eN (2) 3.206 (15) Bi (1) (3) 1.230(7) N(1)eC (7) 1.468 (17) N(1)eC (7) 1.50(2) N(1)eC (7) 1.487 (7) (17) 1.459(17) (1) (7) 102.2 (7) Bi(1)eN(1)eC (7) 98.3 (11) Bi(1)eN(1)eC (7) 103.0(4) Bi(1)eN(2)eC (16) 102.2 (7) Bi (1) (3) 118.6(6) O(2)eN(3)eO (3) 123.1 (6) metal atom, the overall coordination geometry becomes different, i.e.…”

“…(NCS) 2 ] 2[41], which contains both bridging SCN [177.3(8) ] and terminal NCS [178.0(1) ] units.For both compounds 3 and 4 the anionic ligands, i.e. the trifluoroacetate and nitrate, respectively, can be considered as acting as strongly asymmetric, monometallic biconnective (chelating) ligands.…”