| 新的cis-Pt(diphos)(Ⅹ)2配合物的合成和谱学表征 |
| SYNTHESES AND CHARACTERISATION OF NEW C/S-Pt(DIPHOS)X2 COMPLEXES |
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| 摘要: 本文合成了三个新的双膦螯合配体和一系列新的cis-Pt(diphos)X2(diphos=R2PCH2CH2PR2,R=Et,n-Pr,n-Bu,i-Bu;X=Cl-,Br-,I-,CN-,SCN-,NO2-)配合物,经过IR、31PNMR和元素分析表征了它们的结构,并观察到31P化学位移δp、铂-磷偶合常数Jp1-p与配体X的反位效应和双膦配体的σ-供电性质有关。此外,根据谱学研究,发现SCN-和NO2-配体存在键合异构现象,并对谱带进行了归属。 |
| 关键词: 双膦螯合配体 铂配合物 IR和NMR谱 键合异构现象 |
| 基金项目: 国家自然科学基金 |
Abstract: A series of new Pt(II) complexes of bis(dialkylphosphino) ethane were synthesized and characterized by IR, 31PNMR and elemental analyses. The general formula of these complexesis as follows:  R=CH3CH2-,depe; CH3CH2CH2-, d(n-Pr)pe; CH3CH2CH2CH2-, d(n-Bu)pe; (CH3)2CH-, d(i-Pr)pe;(CH3)2CHCH2-,d(i-Bu)pe. X = CF, Br-, I-, CN-, SCN-, NO2.The magnitudes of P chemical shifts δP and platinum-phosphorus coupling constants 1Jpt-p are correlatea with the electro-donating capability of the diphosphine ligands and the trans effect of the anionic ligands X. The coupling con star+s 1Jpt-p, on the one hand, should decrease as the diphosphine ligands in the order of d(i-Pr)pe> depe > d(n-Bu)pe > d(n-Pr)pe > d(i-Bu)pe, and on the other hand, it should increase as the trans-effect of the ligands X decreases in the order of CN- > NO2- > SCN- > NCS- > I- > Br- > Cl- > ONO-. Further, we have also observed the linkage isomeres of thiocyanato-platinum(e.g. Pt-SCN) and isothiocyanato-platinum(e.g. Pt-NCS), nitroplatinum (e.g. Pt-NO2) and nitrito-platinum(e.g. Pt-ONO), and made assign-ments by means of IR and 31P NMR spectroscopies. |
| Keywords: diphosphine ligand platinum complexes IR and 31P NMR spectra bonding isomerism |
| 投稿时间：1988-01-20 |
| 摘要点击次数: 1965 |
| 全文下载次数: 1475 |
| 姜琼忠,张良辅,王树梅,李广年.新的cis-Pt(diphos)(Ⅹ)2配合物的合成和谱学表征[J].无机化学学报,1990,6(2):159-165. |
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