Synthesis and Properties ofpara-Substituted NCN-Pincer Palladium and Platinum Complexes
作者:Martijn Q. Slagt、Gema Rodríguez、Michiel M. P. Grutters、Robertus J. M. Klein Gebbink、Wim Klopper、Leonardus W. Jenneskens、Martin Lutz、Anthony L. Spek、Gerard van Koten
DOI:10.1002/chem.200305336
日期:2004.3.19
NCN-pincer palladium(II) and platinum(II) complexes [MX(NCN-Z)] (M=Pd(II), Pt(II); X=Cl, Br, I; NCN-Z=[2,6-(CH(2)NMe(2))(2)C(6)H(2)-4-Z](-); Z=NO(2), COOH, SO(3)H, PO(OEt)(2), PO(OH)(OEt), PO(OH)(2), CH(2)OH, SMe, NH(2)) were synthesised by routes involving substitution reactions, either prior to or, notably, after metalation of the ligand. The solubility of the pincer complexes is dominated by the
多种对位取代的NCN钳夹钯(II)和铂(II)配合物[MX(NCN-Z)](M = Pd(II),Pt(II); X = Cl,Br,I; NCN- Z = [2,6-(CH(2)NMe(2))(2)C(6)H(2)-4-Z](-); Z = NO(2),COOH,SO(3) H,PO(OEt)(2),PO(OH)(OEt),PO(OH)(2),CH(2)OH,SMe,NH(2))是通过涉及取代反应的途径合成的,或者在或者,特别是在配体金属化之后。对夹配合物的溶解度受对取代基Z的性质支配,这使得几种配合物是水溶性的。通过(195)Pt NMR光谱和DFT计算研究了对位取代基对金属中心电子性能的影响。(195)Pt化学位移和计算得出的铂上自然电荷均与sigma(p)Hammett取代基常数线性相关,因此,可以预测预先设计的钳夹复合物的电子性质。对-PtI基团本身的sigma(p)值在甲醇中确定为-1