二(三苯基膦)乙基黄原酸金属配合物的晶体结构和谱学表征

0IntroductionTheincreasingcommercialvalueoftransitionmetalcomplexesofxanthateshasarousedconsiderableinterestingintheirchemistry.Whiletheiranalyticalapplicationsarewellknown犤1犦,theyarenowfindingextensiveuseinvulcanizationofrubber,frothfloatationprocessforconcentrationofsulphideores,asantioxi-dants,lubricants犤2,3犦,andhavebeenfoundtopossessfungicidalandinsecticidalactivity犤4犦.Inrecentyears,therehasbeengrowinginterestinthestudyofd10metalcomplexes,whichexhibitrichphotophysicalandpho-tochemica…

Crystal Structures and Spectra Characterizations of Ethylxanthic Bis(triphenylphosphine) Metal (Ⅰ) Complex: M(Et-XA) (PPh3)2 [M = Au (Ⅰ), Cu (Ⅰ)]

The crystal structures of the complexes of Au(Et-XA)(PPh₃)₂] (1), and Cu(Et-XA)(PPh₃)₂] (2), have been determined by X-ray crystallography. They are isomorphous. The crystal structures are very similar and consist of discrete molecules of Au(Et-XA)(PPh₃)₂] and Cu(Et-XA)(PPh₃)₂], respectively. They all display distorted tetrahedral geometry around the central metal atom. In the complexes, the ethylxanthate ions act as bidentate lig-ands with their S atoms coordinated to metal. Each forms a four-member chelate ring. The P atoms from two triphenylphosphine ligands are coordinated to the metal atom. The Au-P bond lengths are 0.2295(2)nm and 0.2329(2)nm, and the Au-S bond lengths are 0.2620(3)nm and 0.2846(3)nm, respectively. The Cu-P and Cu-S bond lengths are 0.2254(1)nm, 0.2273(2)nm, and 0.2375(1)nm, 0.2495(2)nm, respectively. Elemental analysis, electronic and IR spectra are in agreement with the structural data. CCDC: 1, 208728; 2, 208903.