Synthesis of new thioether transition metal complexes of 2-(1,3-dithiolan-2-ylidene)-1,3-dithiepin and 2-[bis(ethylthio)methylene]-1,3-dithiepin

Add time:09/08/2019    Source:sciencedirect.com

Several new Pt(II) and Pd(II) compounds of the type LMX2 are reported where L can be one of three new organosulfur molecules which contain the tetrathioethylene unit. Those are: 2-(1,3-dithiolan-2-ylidene)-1,3-dithiepin (1), 2-(1,5-dihydro-2,4-benzodithiepin-3-ylidene)-1,3-dithiepin (2) and 2-[bis(ethylthio)methylene]-1,3-dithiepin (3). Electrochemical characterizations, electronic and infrared studies, and 1H and 13C spectra are reported for these compounds. In addition, a single crystal X-ray structure was determined for cis-2-[bis(ethylthio)methylene]-1,3-dithiepin dichloropalladium(II). This structure belonged to the space P21/n with a = 9.671(3), b = 16.360(6), c = 10.550(3) Å, β = 114.83(2)°, V = 1515.8(8) Å3, μobs = 1.90, and μcalc = 1.930. The structure refined routinely to R = 3.3.

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