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Synthese und Struktur zweier Gold‐Komplexe des Triphenylphosphonium‐[bis(diphenylphosphino)methylids]
Author(s) -
Schmidbaur Hubert,
Graf Wilhelm,
Müller Gerhard
Publication year - 1986
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19860690732
Subject(s) - chemistry , ligand (biochemistry) , crystallography , atom (system on chip) , stereochemistry , nuclear magnetic resonance spectroscopy , embedded system , biochemistry , receptor , computer science
Synthesis and Structure of Two Gold Complexes of Triphenylphosnium [Bis(diphenylphosphino)methylide] Triphenylphosphonium [bis(diphenylphosphino)methylide] ( 1 ) reacts with 1 or 2 equiv. of (CO)AuCl in a solvent to give mono‐ or binuclear Au(I) complexes 2 or 3 , respectively. The Au‐atoms are bound exclusively to P‐atoms, and the ylidic C‐atom remins an uncoordinated link between the three P‐atoms. Contrary to findings with the free ligand 1 , 31 P‐NMR spectra of 3 are in agreement with free PC bond rotation in solution. 197 Au‐ Mössbauer data for both complexes indicate the presence of Au(I) centers in a very similar environment. X‐Ray structure analysis shows that the basic geometry of the free ligand is essentially retained in the complexes. Apart from the different degree of complexation, the structures of 2 and 3 differ only slightly in the conformation of the phenyl rings.