Spectroscopic analysis of (1-α,2-α′: η4-quinodimethane)tris(trimethylphosphine)ruthenium(0)

Autor:	Raymond K. Mackie, Nigel J. Simpson, David J. Cole-Hamilton
Rok vydání:	1990
Předmět:	Geminal Stereochemistry Chemical shift Trimethylphosphine chemistry.chemical_element General Chemistry Ring (chemistry) Ruthenium chemistry.chemical_compound Crystallography chemistry Moiety General Materials Science Methylene Two-dimensional nuclear magnetic resonance spectroscopy
Zdroj:	Magnetic Resonance in Chemistry. 28:510-514
ISSN:	1097-458X 0749-1581
DOI:	10.1002/mrc.1260280608
Popis:	The 1H, 13C and 31P NMR spectra of [Ru(CH2C6H4CH2)(PMe3)3], which contains a coordinated o-xylidene moiety, have been analysed. Parameters such as the geminal coupling in the methylene groups, P,H couplings and the chemical shifts of the quaternary ring carbon atoms all point to a metal-o-xylidene binding that is intermediate between σ2,π and π2. Spectral assignment is assisted by P-H correlation spectroscopy using the COLOC sequence. The best parameter for identifying the bonding mode is the chemical shift for the quaternary aromatic carbon atoms.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::de1f295fed9300b64cc32e27f8334574 https://doi.org/10.1002/mrc.1260280608 Zobrazit plný text záznamu Plný text