The Layered Coordination Polymer Bi(SCN)₃·1/2H₂O

Abstract

All thiocyanate anions bind with both ends to different cations. The coordination network expands in plane layers parallel (1 1 0). The water molecule coordinates one of the two independent Bi 3+ cations. Dehydration sets in at 100 °C, followed by stepwise thermal decomposition to Bi 2 S 3 .

Discrete [Yb(NCS)3(H2O)5] Molecules in Pentaaquatriisothiocyanatoytterbium(III) Monohydrate

“…The vibrational frequencies obtained from the ATR‐FT infrared and the single‐crystal Raman spectra of [Yb(NCS) 3 (H 2 O) 5 ] · H 2 O (Figure ) compare well to the frequencies for the free (SCN) – anion, [Dy(NCS) 3 (H 2 O) 5 ] · H 2 O and the related bismuth(III) thiocyanate hemihydrate Bi(NCS) 3 · 1 / 2 H 2 O (Table ). However, in the range from 990 to 1200 cm –1 in the ATR‐FTIR spectrum vibrational modes of Ba(SO 4 ) impurities seem to be present…”

“…The ATR‐FT infrared spectrum was obtained by introducing powdered material of the title compound in a nitrogen‐filled glove box into the beam of a Nicolet iS5‐FTIR spectrometer (Thermo Fisher Scientific, Waltham, MA, USA) equipped with an attenuated total reflection unit. The combined vibrational spectra of [Yb(NCS) 3 (H 2 O) 5 ] · H 2 O are displayed in Figure , whereas Table contains the exact frequencies and their assigned modes compared to data of the free thiocyanate anion in aqueous solution, [Dy(NCS) 3 (H 2 O) 5 ] · H 2 O and Bi(NCS) 3 · 1 / 2 H 2 O.…”

Strongly Coloured Thiocyanate Frameworks with Perovskite-Analogue Structures

“…The synthesis of H 3 [Bi(SCN) 6 ] was adapted from ref. 20. Bi 2 O 2 (CO 3 ) (0.50 g, 0.98 mmol) was suspended in ca.…”

“…Previous work has established that the homoleptic octahedral [Bi(SCN) 6 ] 3À anion can be used to form framework structures, in the alkali metal double hexagonal perovskite Cs 2 Na[Bi(SCN) 6 ] and the nickel arsenide structured Ln[Bi(SCN) 6 14,16 In addition, [Bi(SCN) 3 ] 3À has been reported to form an insoluble compound suitable for a quantitative chemical analysis with chromium(III) solutions. 19 A further interesting feature of these bismuth thiocyanate frameworks are their yellow and orange colours, also found in bismuth thiocyanate hemihydrate 20 There are, however, no reported structures or physical properties of either cubic perovskite derived structures or transition metal based bismuth thiocyanate frameworks. In this paper we report the synthesis, structure and optical properties of three analogues of the cyanide Prussian blues, the thiocyanate frameworks M III [Bi(SCN) 6 ]; M ¼ Fe, Cr and Sc, each of which is strongly coloured.…”

Arylphosphonic acid esters as bridging ligands in coordination polymers of bismuth

“…Additionally, poly meric bismuth alkoxides (Whitmire et al, 1992;Roggan et al, 2005;Kricheldorf et al, 2008;Breunig et al, 2009b) have been reported as well as coordination polymers with sulfur-or seleniumcontaining donor ligands (Barton et al, 2000;Yim et al, 2000;Briand et al, 2012). Bismuth halides and pseudo halides are also capable of forming coordination polymers (Clegg et al, 1992(Clegg et al, , 1993Wang et al, 1997;Breunig et al, 2009a;Erbe et al, 2010;Koch and Ruck, 2010), and additionally, aromatic π donors (Silvestru et al, 1999;Mehring and Schürmann, 2001;Schmidbaur and Schier, 2008;Auer et al, 2009;Caracelli et al, 2013), organometallic ligands (Roggan et al, 2005), hexacyanoferrates (Perera et al, 2011), and polyoxometallates (Xu et al, 2007) were shown to bridge bismuth atoms to give unusual coordination polymers.…”