Cover Image

Comparative study of electronic and steric properties of bulky, electron-rich bisphosphinoethane, bis-NHC and phosphino-NHC chelating ligands in analogous rhodium(I) and iridium(I) COD and carbonyl complexes

The synthesis and characterization of rhodium(I) and iridium(I) COD (1,5-cyclooctadiene) and carbonyl complexes containing small-bite angle and bulky bisphosphine (bis(di-tert-butylphosphino)ethane = dtbpe), bis-NHC (1,1′-di-tert-butyl-3,3′-methylenediimidazolin-2,2′-ylidene = BisNHC) and phosphino-...

Full description

Saved in:
Bibliographic Details
Main Authors: Brill, Marcel (Author) , Marrwitz, Daniela (Author) , Rominger, Frank (Author) , Hofmann, Peter (Author)
Format: Article (Journal)
Language:English
Published: 2015
In: Journal of organometallic chemistry
Year: 2015, Volume: 775, Pages: 137-151
ISSN:1872-8561
DOI:10.1016/j.jorganchem.2014.04.008
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.jorganchem.2014.04.008
Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0022328X14001788
Get full text
Author Notes:Marcel Brill, Daniela Marrwitz (née Eisenhauer), Frank Rominger, Peter Hofmann
Description
Summary:The synthesis and characterization of rhodium(I) and iridium(I) COD (1,5-cyclooctadiene) and carbonyl complexes containing small-bite angle and bulky bisphosphine (bis(di-tert-butylphosphino)ethane = dtbpe), bis-NHC (1,1′-di-tert-butyl-3,3′-methylenediimidazolin-2,2′-ylidene = BisNHC) and phosphino-functionalized NHC (3-tert-butyl-1-(di-tert-butylphosphinomethyl)-imidazolin-2-ylidene = NHCP) ligands is described. X-ray diffraction analysis of most compounds made and spectroscopic data permitted a valuable comparison of the characteristic steric and electronic properties of these related ligand classes and also of the “abnormally” bound form of the NHCP ligand (aNHCP). While the dicarbonyl complexes indicated similar overall donating abilities for the BisNHC and NHCP ligands, dtbpe and the aNHCP ligand were shown to be significantly less or more electron donating, respectively. These complexes also allowed the evaluation of the different σ-donating influences of the NHC moiety in comparison to the phosphine moiety within the hybrid NHC-P systems.
Item Description:Available online 13 April 2014
Gesehen am 28.05.2020
Physical Description:Online Resource
ISSN:1872-8561
DOI:10.1016/j.jorganchem.2014.04.008

Similar Items