Thioxoethenylidene C₂S: A Matrix‐Spectroscopic Study

Abstract

Thioxoethenylidene C2S (5), known for its high abundance in interstellar space, has been generated by irradiation of C3S2 (4) and C3OS (6) in an argon matrix at 10 K. Its structural elucidation is based on comparison of the experimental and calculated IR and UV spectra. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)

Thioxoethenylidene (CCS) as a Bridging Ligand

“…C36H44B2Mo2N12O4S.CH2Cl2, Mr = 1039.32, T = 150(2) K, triclinic, space group P-1 (No.2), a = 13.7686 (6), b = 14.0695(5), c = 14.3983(6) Å, α = 98.002(2), β = 114.364(2), γ = 113.651(2)°, V = 2166.7(2) Å 3 , Z = 2, Dcalcd = 1.367 Mg m -3 , µ(Cu Kα) 5.81 mm -1 , dark green lath, 0.03 x 0.10 x 0.20 mm, 15,595 measured reflections with 2θmax = 144.6°, 9,930 independent reflections, 9,887 adsorption-corrected data used in F 2 refinement, 541 parameters, no restraints, R 1 = 0.037, wR 2 = 0.096 for 8,958 reflections with I > 2σ(I).…”

“…2 Somewhat later, Saito also observed thioxoethenylidene, CCS, in inter-stellar clouds 5 and similarly, irradiation (248 nm) of propadienedithione (SC 3 S) entrapped in an argon matrix (10 K) has allowed the terrestrial observation of transient, triplet CCS (ν 1 = 1666.6 cm -1 ). 6 In contrast to the rich organometallic chemistry of carbon monosulfide, no complex of coordinated C 2 S has been reported, though the ketenylidene ligand (CCO) has often been observed in cluster chemistry 7 and a terminal mononuclear ketenylidene ligand has been implicated in the cleavage of carbon suboxide by [WCl 2 (PMePh 2 ) 4 ]. 8 Thioketenyl and selenoketenyl complexes L n M(η 2 -C,C'-ACCR) (M = Mo, W; A = S, Se) have, however, been reported to arise from the reactions of ketenyl complexes with Lawesson's and Woollins' reagents, respectively.…”

Slow photoelectron imaging spectroscopy of CCO− and CCS−

“…The CCO radical has been studied by microwave spectroscopy, 10,11 infrared and UV absorption spectroscopy, [12][13][14][15][16][17][18][19][20][21][22] and laser-induced fluorescence ͑LIF͒. 23 Similarly, CCS has been investigated with microwave spectroscopy, 2,24,25 infrared and UV absorption spectroscopy, [26][27][28] and LIF. 29,30 These experiments have provided the rotational constants and some vibrational frequencies of the X 3 ⌺ − and A 3 ⌸ electronic states.…”

A theoretical spectroscopy study of theX3Σ−and theA3Π states of the C2S radical

“…The electronic ground state of this radical has 3 Σ − symmetry. Its vibrational spectrum has been studied both in rare-gas matrices [7,8,9] and in the gas phase using laser induced fluorescence (LIF) techniques [10]. The first excited electronic state, of 3 Π symmetry, has been recently investigated both in the gas phase, using LIF techniques, [10,11] and in rare gas matrices [12].…”