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Double donation in trigonal planar iron–carbodiphosphorane complexes – a concise study on their spectroscopic and electronic properties

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Abstract

We present the syntheses of trigonal planar coordinated Fe(II) carbodiphosphorane (CDPR) complexes, starting from iron(II)-bis(trimethylsilylamide) [Fe{N(SiMe3)2}2] and hexaphenyl-(CDPPh) and sym-dimethyltetraphenyl-carbodiphosphoranes (CDPMe), respectively. Both complexes [CDPPh-Fe{N(SiMe3)2}2] (1) and [CDPMe-Fe{N(SiMe3)2}2] (2) were examined in solution and in the solid state. 1 shows a dissociation equilibrium in solution which we monitored by variable temperature 1H-NMR spectroscopy. Magnetic measurements of 1 and 2 yielded a high spin configuration (S = 2) for both complexes. Quantum chemical calculations were performed to analyze the bonding situation in compound 1.

Graphical abstract: Double donation in trigonal planar iron–carbodiphosphorane complexes – a concise study on their spectroscopic and electronic properties

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Article information


Submitted
12 Dec 2019
Accepted
20 Jan 2020
First published
05 Feb 2020

Dalton Trans., 2020, Advance Article
Article type
Paper

Double donation in trigonal planar iron–carbodiphosphorane complexes – a concise study on their spectroscopic and electronic properties

N. H. Kneusels, J. E. Münzer, K. Flosdorf, D. Jiang, B. Neumüller, L. Zhao, A. Eichhöfer, G. Frenking and I. Kuzu, Dalton Trans., 2020, Advance Article , DOI: 10.1039/C9DT04725E

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