Higher MLCT lifetime of carbene iron(II) complexes by chelate ring expansion

被引：28

作者：

Reuter, Thomas ^{[1
]}

Kruse, Ayla ^{[2
]}

Schoch, Roland ^{[2
]}

Lochbrunner, Stefan ^{[3
]}

Bauer, Matthias ^{[2
]}

Heinze, Katja ^{[1
]}

机构：

[1] Johannes Gutenberg Univ Mainz, Dept Chem, Duesbergweg 10-14, D-55128 Mainz, Germany

[2] Univ Rostock, Inst Phys, Dept Life Light & Matter, D-18051 Rostock, Germany

[3] Univ Paderborn, Fac Sci, Dept Chem, Ctr Sustainable Syst Design, D-33098 Paderborn, Germany

来源：

CHEMICAL COMMUNICATIONS | 2021年 / 57卷 / 61期

关键词：

EXCITED-STATE LIFETIME; PHOTOPHYSICAL PROPERTIES; COORDINATION-COMPOUNDS; POLYPYRIDINE COMPLEX; SPIN-CROSSOVER; PHOTOCHEMISTRY; TEMPERATURE; LIGHT;

D O I：

10.1039/d1cc02173g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Combining strong sigma-donating N-heterocyclic carbene ligands and pi-accepting pyridine ligands with a high octahedricity in rigid iron(II) complexes increases the (MLCT)-M-3 lifetime from 0.15 ps in the prototypical [Fe(tpy)(2)](2+) complex to 9.2 ps in [Fe(dpmi)(2)](2+)1(2+). The tripodal CNN ligand dpmi (di(pyridine-2-yl)(3-methylimidazol-2-yl)methane) forms six-membered chelate rings with the iron(II) centre leading to close to 90 degrees bite angles and enhanced iron-ligand orbital overlap.

引用

页码：7541 / 7544

页数：4

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