国产bbaaaaa片,成年美女黄网站色视频免费,成年黄大片,а天堂中文最新一区二区三区,成人精品视频一区二区三区尤物

首頁> 外文OA文獻(xiàn) >Metal?metal interactions in heterobimetallic d8?d10 complexes. structures and spectroscopic investigation of M‘M‘?‘(μ-dcpm)2(CN)2+ (M‘ = Pt, Pd; M‘?‘ = Cu, Ag, Au) and related complexes by uv?vis absorption and resonance raman spectroscopy and ab initio calculations
【2h】

Metal?metal interactions in heterobimetallic d8?d10 complexes. structures and spectroscopic investigation of M‘M‘?‘(μ-dcpm)2(CN)2+ (M‘ = Pt, Pd; M‘?‘ = Cu, Ag, Au) and related complexes by uv?vis absorption and resonance raman spectroscopy and ab initio calculations

機(jī)譯:雜雙金屬d8-d10絡(luò)合物中的金屬-金屬相互作用。 M'M''(μ-dcpm)2(CN)2 +(M'= Pt,Pd; M''= Cu,Ag,Au)及其相關(guān)配合物的結(jié)構(gòu)和光譜研究共振拉曼光譜和從頭算

摘要

X-ray structural and spectroscopic properties of a series of heterodinuclear d8?d10 metal complexes [M‘M‘?‘(μ-dcpm)2(CN)2]+ containing d8 Pt(II), Pd(II), or Ni(II) and d10 Au(I), Ag(I), or Cu(I) ions with a dcpm bridging ligand have been studied (dcpm = bis(dicyclohexylphosphino)methane; M‘ = Pt, M‘?‘ = Au 4, Ag 5, Cu, 6; M‘?‘ = Au, M‘ = Pd 7, Ni 8). X-ray crystal analyses showed that the metal···metal distances in these heteronuclear metal complexes are shorter than the sum of van der Waals radii of the M‘ and M‘?‘ atoms. The UV?vis absorption spectra of 4?6 display red-shifted intense absorption bands from the absorption spectra of the mononuclear trans-[Pt(phosphine)2(CN)2] and [M‘?‘(phosphine)2]+ counterparts, attributable to metal?metal interactions. The resonance Raman spectra confirmed assignments of 1[ndσ*→(n + 1)pσ] electronic transitions to the absorption bands at 317 and 331 nm in 4 and 6, respectively. The results of theoretical calculations at the MP2 level reveal an attractive interaction energy curve for the skewed [trans-Pt(PH3)2(CN)2?Au(PH3)2+] dimer. The interaction energy of Pt(II)?Au(I) was calculated to be ca. 0.45 ev.
機(jī)譯:一系列含d8 Pt(II),Pd(II)或Ni(d)的異核d8-d10金屬配合物[M'M''(μ-dcpm)2(CN)2] +的X射線結(jié)構(gòu)和光譜性質(zhì)II)和具有dcpm橋聯(lián)配體的d10 Au(I),Ag(I)或Cu(I)離子已得到研究(dcpm =雙(二環(huán)己基膦基)甲烷; M'= Pt,M''= Au 4,Ag 5,Cu,6; M'= Au,M'= Pd 7,Ni 8)。 X射線晶體分析表明,這些異核金屬絡(luò)合物中的金屬···金屬距離比M′和M′′原子的范德華半徑之和短。從單核反式-[Pt(膦)2(CN)2]和[M''(膦)2] +對應(yīng)物的吸收光譜中,-4-6的UV-vis吸收光譜顯示出紅移的強(qiáng)吸收帶,歸因于金屬間的相互作用。共振拉曼光譜證實(shí)了1 [ndσ*→(n + 1)pσ]電子躍遷分別對應(yīng)于4和6中317和331 nm處的吸收帶。在MP2級別的理論計(jì)算結(jié)果表明,偏斜的[trans-Pt(PH3)2(CN)2-Au(PH3)2+]二聚體具有有吸引力的相互作用能曲線。 Pt(II)-Au(I)的相互作用能經(jīng)計(jì)算為ca。 0.45ev。

著錄項(xiàng)

相似文獻(xiàn)

  • 外文文獻(xiàn)
  • 中文文獻(xiàn)
  • 專利

客服郵箱:kefu@zhangqiaokeyan.com

京公網(wǎng)安備:11010802029741號 ICP備案號:京ICP備15016152號-6 六維聯(lián)合信息科技 (北京) 有限公司?版權(quán)所有
  • 客服微信

  • 服務(wù)號