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Stability and trans Influence in Fluorinated Gold(I) Coordination Compounds
Author(s) -
MorenoAlcántar Guillermo,
HernándezToledo Hugo,
GuevaraVela José Manuel,
RochaRinza Tomás,
Martín Pendás Ángel,
FloresÁlamo Marcos,
Torrens Hugo
Publication year - 2018
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201800567
Subject(s) - chemistry , electronegativity , phosphine , ligand (biochemistry) , triphenylphosphine , crystallography , chloride , chemical shift , stereochemistry , quantum chemical , chemical stability , catalysis , medicinal chemistry , molecule , organic chemistry , biochemistry , receptor
We examined the Au–P and Au–X chemical bonding scenario throughout the series of compounds of the general formula [AuX(L P )] wherein L P is triphenylphosphine or a fluorinated phosphine [PPh F = P(C 6 H 5 ) 2 (C 6 F 5 ) 1 , P(C 6 H 5 )(C 6 F 5 ) 2 2 and P(C 6 F 5 ) 3 3 ] and X is chloride or a fluorinated thiolate [SR F = SCF 3 a , SCH 2 CF 3 b , SC 6 F 5 c , SC 6 F 4 (CF 3 )‐4 d ]. We found that the increase of the fluorination degree or the replacement of Cl – by a – SR F ligand decreases the stability of the compound. Furthermore, this substitution shifts the 31 P‐NMR signals to low field, which indicates differences in the electronegativity of the phosphorus due to the distinct trans influences of the Cl – and – SR F species. These effects correlate with the charge of the gold atom coordinated to phosphorus. Our investigation shows the high potential of fluorination as a strategy for the modulation of the properties of gold compounds, for example in catalysis, and the applicability of quantum chemical topology studies in the explanation of these features.