Unknown

Dataset Information

0

A Stable Homoleptic Organometallic Iron(IV) Complex.


ABSTRACT: A homoleptic organometallic FeIV complex that is stable in both solution and in the solid state at ambient conditions has been synthesized and isolated as [Fe(phtmeimb)2 ](PF6 )2 (phtmeimb=[phenyl(tris(3-methylimidazolin-2-ylidene))borate]- ). This FeIV N-heterocyclic carbene (NHC) complex was characterized by 1 H?NMR, HR-MS, elemental analysis, scXRD analysis, electrochemistry, Mößbauer spectroscopy, and magnetic susceptibility. The two latter techniques unequivocally demonstrate that [Fe(phtmeimb)2 ](PF6 )2 is a triplet FeIV low-spin S=1 complex in the ground state, in agreement with quantum chemical calculations. The electronic absorption spectrum of [Fe(phtmeimb)2 ](PF6 )2 in acetonitrile shows an intense absorption band in the red and near IR, due to LMCT (ligand-to-metal charge transfer) excitation. For the first time the excited state dynamics of a FeIV complex was studied and revealed a ?0.8?ps lifetime of the 3 LMCT excited state of [Fe(phtmeimb)2 ](PF6 )2 in acetonitrile.

SUBMITTER: Prakash O 

PROVIDER: S-EPMC7590184 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature

altmetric image

Publications

A Stable Homoleptic Organometallic Iron(IV) Complex.

Prakash Om O   Chábera Pavel P   Rosemann Nils W NW   Huang Ping P   Häggström Lennart L   Ericsson Tore T   Strand Daniel D   Persson Petter P   Bendix Jesper J   Lomoth Reiner R   Wärnmark Kenneth K  

Chemistry (Weinheim an der Bergstrasse, Germany) 20200911 56


A homoleptic organometallic Fe<sup>IV</sup> complex that is stable in both solution and in the solid state at ambient conditions has been synthesized and isolated as [Fe(phtmeimb)<sub>2</sub> ](PF<sub>6</sub> )<sub>2</sub> (phtmeimb=[phenyl(tris(3-methylimidazolin-2-ylidene))borate]<sup>-</sup> ). This Fe<sup>IV</sup> N-heterocyclic carbene (NHC) complex was characterized by <sup>1</sup> H NMR, HR-MS, elemental analysis, scXRD analysis, electrochemistry, Mößbauer spectroscopy, and magnetic susce  ...[more]

Similar Datasets

| S-EPMC5485009 | biostudies-literature
| S-EPMC8252546 | biostudies-literature
| S-EPMC2676163 | biostudies-literature
| S-EPMC5253674 | biostudies-literature
| S-EPMC3956701 | biostudies-literature
| S-EPMC5620524 | biostudies-literature
| S-EPMC10573082 | biostudies-literature
| S-EPMC2841742 | biostudies-literature
| S-EPMC9057267 | biostudies-literature
| S-EPMC4139179 | biostudies-literature