54576-32-8Relevant articles and documents
Unusual triplet-triplet annihilation in a 3D copper(i) chloride coordination polymer
Schlachter, Adrien,Bonnot, Antoine,Fortin, Daniel,Karsenti, Paul-Ludovic,Knorr, Michael,Harvey, Pierre D.
, p. 16538 - 16548 (2019)
A new coordination polymer (CP) defined as [Cu2Cl2(EtS(CH2)4SEt)4]n (CP2) was prepared by reacting EtS(CH2)4SEt with CuCl in acetonitrile in a 1:2 stoichiometric ratio. The X-ray structure reveals formation of non-porous 3D material composed of parallel 2D-[Cu2Cl2S2]n layers of Cl-bridged Cu2(μ-Cl)2 rhomboids assembled by EtS(CH2)4SEt ligands. A weak triplet emission (Φe e of 0.93 (298 K) and 3.5 ns (77 K) as major components. CP2 is the only 2nd example of emissive thioether/CuCl-containing material and combined DFT/TDDFT computations suggest the presence of lowest energy M/XLCT excited states. Upon increasing the photon flux (i.e. laser power), a triplet-triplet annihilation (TTA) is induced with quenching time constants of 72 ps (kQ = 1.3 × 1010 s-1) and 1.0 ns (kQ = 7.1 × 108 s-1) at 298 and 77 K, respectively, proceeding through an excitation energy migration operating via a Dexter process. Two distinct (Io)1/2 (Io = laser power) dependences of the emission intensity are depicted, indicating saturation as the observed emission increases with the excitation flux. These findings differ from that previously reported isomorphous CP [Cu2Br2(μ-EtS(CH2)4SEt)4]n (CP1), which exhibits no TTA behaviour at 77 K, and only one (laser power)2 dependence at 298 K. The ~18-fold increase in kQ upon warming CP2 from 77 to 298 K indicates a temperature-aided TTA process. The significant difference between the presence (slower, CP2) and absence (CP1) of TTA at 77 K is explained by the larger unit cell contraction of the former upon cooling. This is noticeable by the larger change in inter-rhomboid Cu?Cu separation for CP2.
Reactions of diorganyl disulfides with dihaloalkanes in basic reductive media. Synthesis of bis(organylthio)alkanes
Alekminskaya,Russavskaya,Korchevin,Deryagina
, p. 75 - 78 (2007/10/03)
A convenient preparative synthesis of bis(organylthio)alkanes was developed. It is based on alkylation with dihaloalkanes of solutions of diorganyl disulfides in the basic reductive system hydrazine hydrate-alkali. The generation of organylthiolate anions
GAS-CHROMATOGRAPHIC CHARACTERISTICS OF SULFUR-CONTAINING COMPOUNDS. 9. THIOACETALS, THIOKETALS, AND α,ω-BIS(ALKYLTHIO)ALKANES
Golovnya, R. V.,Misharina, T. A.,Garbuzov, V. G.
, p. 1765 - 1769 (2007/10/02)
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