Bis(1,3‐dithiol‐2‐ylidene)‐substituted subtriazachlorin was formed because of an unusual reaction of a 1,3‐dithiole‐2‐one‐fused subphthalocyanine in a triethylphosphite‐mediated tetrathiafulvalene synthesis. In this novel molecule, the bis(1,3‐dithiol‐2‐ylidene)ethane moiety and subtriazachlorin structure are fused, resulting in an electron‐donating ability and broad absorption in the near‐infrared region. 相似文献
Synthesis, Structures, and Characterization of Titanium, Zinc, Nickel, and Palladium Thioether Thiolate Complexes of Heterocyclic 1,2‐Dithiolates Synthesis and properties of mixed ligand complexes of thioether thiolate ligands 4‐methylthio‐1,3‐dithiole‐2‐one‐5‐thiolate (dmidCH3), 4‐methylthio‐1,3‐dithiole‐2‐thione‐5‐thiolate (dmitCH3), and 4‐methylthio‐1,3‐dithiole‐2‐selone‐5‐thiolate (dmiseCH3) are described. The x‐ray structures of CpTi(dmidCH3)2 (Cp′ = methylcyclopentadienyl), of two polymorphic structures of (tmeda)Zn(dmitCH3)2 [tmeda = 1,2‐bis(dimethylamino)ethane], of (dppe)Ni(dmitCH3)2, and (dppe)Pd(dmitCH3)2 [dppe=1,2‐bis(diphenylphosphino)ethane] are reported. 相似文献
Four complexes with the ligands dmit and dmio were synthesized. Reaction of (PhCO)2(dmit) and (PhCO)2(dmio) with MeONa afforded the intermediates 2‐thioxo‐1,3‐dithiole‐4,5‐dithiolate dianion and 2‐oxo‐1,3‐dithiole‐4,5‐dithiolate dianion, respectively. Reaction of the two dianions with (diphosphine)NiCl2 [diphosphine = (Z)‐1, 2‐bis(diphenylphosphanyl)ethane (dppv), 1,2‐bis(diphenylphosphanyl)benzene (dppb)] gave (dppv)Ni(dmit) ( 1 ), (dppb)Ni(dmit) ( 2 ), (dppv)Ni(dmio) ( 3 ), and (dppb)Ni(dmio) ( 4 ). This synthesis route was found to be an efficient pathway to prepare dmit and dmio ligand complexes. Complexes, 1 – 4 were fully characterized by elemental analysis and IR, 1H NMR, 13C NMR, and 31P NMR spectroscopy. In addition, the molecular structures of 1 , 3 and 4 were established by X‐ray diffraction. 相似文献
A highly selective assay method has been developed to detect mercury (II) (Hg2+) ions using cationic conjugated polymer (CCP). The transduction mechanism is based on a Hg2+ promoted reaction. In the absence of Hg2+ ions, the CCP can form the complex with an anionic 1,3‐dithiole‐2‐thione derivative through electrostatic interactions. The fluorescence of CCP is efficiently quenched by 1,3‐dithiole‐2‐thione derivative via an electron transfer process. Upon adding Hg2+ ions, the transformation of 1,3‐dithiole‐2‐thione into 1,3‐dithiole‐2‐one inhibits the quenching, and the fluorescence of CCP is recovered. Distinguishing aspects of this assay include the signal amplification of CCPs and a specific Hg2+ promoted reaction. By triggering the change in the emission intensity of CCP, it is possible to detect Hg2+ ions in aqueous solution.
π‐Conjugated donor–acceptor systems based on dithiafulvene (DTF) donor units and various acceptor units have attracted attention for their linear and nonlinear optical properties. The reaction between p‐benzoquinone and a 1,3‐dithiole phosphonium salt, deprotonated by lithium hexamethyldisilazide (LiHMDS), gave a product mixture from which the Michael adduct [systematic name: dimethyl 2‐(3‐hydroxy‐6‐oxocyclohexa‐2,4‐dien‐1‐ylidene)‐2H‐1,3‐dithiole‐4,5‐dicarboxylate], C13H10O6S2, was isolated. It is likely that one of the unidentified products obtained previously by others from related reactions could be a similar Michael adduct. 相似文献