Structural organization of a {ruthenium[tris(bipyridyl)]}2+ complex by strong π-π stacking of a tethered 1,8-naphthalimide synthon: Impact on electrochemical and spectral properties

被引：29

作者：

Reger, Daniel L. ^{[1
]}

Elgin, J. Derek ^{[1
,2
]}

Pellechia, Perry J. ^{[1
]}

Smith, Mark D. ^{[1
]}

Simpson, Brett K. ^{[2
]}

机构：

[1] Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA

[2] Coastal Carolina Univ, Dept Chem & Phys, Conway, SC 29528 USA

来源：

POLYHEDRON | 2009年 / 28卷 / 08期

基金：

美国国家科学基金会;

关键词：

Ruthenium; N-ligands; pi-pi stacking; PGSE-NMR; Bipyridine; PHOTOINDUCED ELECTRON-TRANSFER; GRADIENT SPIN-ECHO; CENTER-DOT-O; BUILDING-BLOCKS; HYDROGEN; 2,2'-BIPYRIDINES;

D O I：

10.1016/j.poly.2009.03.009

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The new ligand N-(5-methyl-2,2'-bipyridyl)-1,8-naphthalimide has been prepared by the reaction of 1,8-naphthalimide, 5-(bromomethyl)-2,2'-bipyridine and potassium carbonate in refluxing acetone. Reaction of this ligand and bis(bipyridyl) ruthenium(II) dichloride in refluxing ethanol followed by anion exchange with ammonium hexafluorophosphate produces {ruthenium[bis(bipyridyl)][N-(5-methyl-2,2'-bipyridyl)-1,8-naphthalimide]}(PF6)(2) (1). In both the solid state (X-ray analysis) and in solution (shown by PGSE-NMR analysis), the 1,8-naphthalimide synthon organizes the cationic metal units into dimers with a strong, directionally oriented (head to tail) pi-pi stacking interaction. UV-VIS, fluorescence spectroscopy and electrochemical studies indicate that even with the strong interactions of the 1,8-naphthalimide groups, it does not have a significant influence on the properties of the [Ru(bipy)(3)](2+) core. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1469 / 1474

页数：6