Heteroleptic Pyridyl-Carbene Iron Complexes with Tuneable Electronic Properties

被引：56

作者：

Duchanois, Thibaut ^{[1
,2
]}

Etienne, Thibaud ^{[1
,2
,3
]}

Beley, Marc ^{[1
,2
]}

Assfeld, Xavier ^{[1
,2
]}

Perpete, Eric A. ^{[3
]}

Monari, Antonio ^{[1
,2
]}

Gros, Philippe C. ^{[1
,2
]}

机构：

[1] Univ Lorraine, SRSMC UMR 7565, Photosens, F-54506 Vandoeuvre Les Nancy, France

[2] CNRS, SRSMC UMR 7565, Photosens, F-54506 Vandoeuvre Les Nancy, France

[3] Fac Univ Notre Dame Paix, LCTA, B-5000 Namur, Belgium

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2014年 / 23期

关键词：

Iron; Chromophores; Tridentate ligands; N ligands; Carbenes; Photophysics; CHARGE-TRANSFER; RU(II) COMPLEXES; SPIN-CROSSOVER; LIGAND; METAL; PHOTOCHEMISTRY; DYNAMICS;

D O I：

10.1002/ejic.201402356

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

New heteroleptic iron complexes mixing a terpyridine bearing a protonable pyridyl substituent (pytpy) and a pyridyl carbene ligand (carb) have been prepared and characterised by UV/Vis spectroscopy, cyclic voltammetry and TD-DFT computations. The absorption spectrum of [Fe(carb)(pytpy)](2+) showed a notable redshift compared with the homoleptic [Fe(carb)(2)](2+) complex. The MLCT transition occurred at even lower energy when the pendant pyridine was protonated, leading to a wide absorption domain in the 450-650 nm range. Calculations revealed the strong propensity of excited electrons to move from the metal to the pytpy ligand in the complex. This new family of complexes is a promising addition to the arsenal of iron-based chromophores with tuneable electronic properties.

引用

页码：3747 / 3753

页数：7

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