Gupta Parna, Dutta Swati, Basuli Falguni, Peng Shie-Ming, Lee Gene-Hsiang, Bhattacharya Samaresh
Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata, India.
Inorg Chem. 2006 Jan 9;45(1):460-7. doi: 10.1021/ic051874v.
Reaction of 2-(arylazo)phenols with [Ru(PPh(3))(2)(CO)(2)Cl(2)] affords a family of organometallic complexes of ruthenium(II) of type [Ru(PPh(3))(2)(CO)(CNO-R)], where the 2-(arylazo)phenolate ligand (CNO-R; R = OCH(3), CH(3), H, Cl, and NO(2)) is coordinated to the metal center as tridentate C,N,O-donor. Another group of intermediate complexes of type [Ru(PPh(3))(2)(CO)(NO-R)(H)] has also been isolated, where the 2-(arylazo)phenolate ligand (NO-R) is coordinated to the metal center as bidentate N,O-donor. Structures of the [Ru(PPh(3))(2)(CO)(NO-OCH(3))(H)] and [Ru(PPh(3))(2)(CO)(CNO-OCH(3))] complexes have been determined by X-ray crystallography. All the complexes are diamagnetic and show characteristic (1)H NMR signals and intense MLCT transitions in the visible region. Both the [Ru(PPh(3))(2)(CO)(NO-R)(H)] and [Ru(PPh(3))(2)(CO)(CNO-R)] complexes show two oxidative responses on the positive side of SCE.
2-(芳基偶氮)苯酚与[Ru(PPh(3))(2)(CO)(2)Cl(2)]反应可得到一系列[Ru(PPh(3))(2)(CO)(CNO-R)]型的钌(II)有机金属配合物,其中2-(芳基偶氮)酚盐配体(CNO-R;R = OCH(3)、CH(3)、H、Cl和NO(2))作为三齿C、N、O供体与金属中心配位。还分离出了另一组[Ru(PPh(3))(2)(CO)(NO-R)(H)]型的中间配合物,其中2-(芳基偶氮)酚盐配体(NO-R)作为双齿N、O供体与金属中心配位。[Ru(PPh(3))(2)(CO)(NO-OCH(3))(H)]和[Ru(PPh(3))(2)(CO)(CNO-OCH(3))]配合物的结构已通过X射线晶体学确定。所有配合物均为抗磁性,在可见光区域显示出特征性的(1)H NMR信号和强烈的MLCT跃迁。[Ru(PPh(3))(2)(CO)(NO-R)(H)]和[Ru(PPh(3))(2)(CO)(CNO-R)]配合物在SCE的正向均显示出两种氧化响应。