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Gold Coordination by 2‐(Diphenylphosphanyl)aniline
Author(s) -
LópezDeLuzuriaga José M.,
Schier Annette,
Schmidbaur Hubert
Publication year - 1997
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19971300516
Subject(s) - chemistry , tetrahydrothiophene , thioether , ligand (biochemistry) , aniline , crystal structure , medicinal chemistry , metal , salt (chemistry) , crystallography , coordination complex , stereochemistry , chloride , ionic bonding , ion , organic chemistry , biochemistry , receptor
The reaction of 2‐(diphenylphosphanyl)aniline ( 1 ) with (tetrahydrothiophene)gold(I) chloride in the molar ratio 1:1 gives a stable molecular complex 2 , in which the gold atom is bonded to the phosphorus atom. Reaction of two equivalents of ligand 1 with one equivalent of the salt [(tht) 2 Au]ClO 4 results in the displacement of both thioether ligands, affording the ionic complex {[(2‐NH 2 C 6 H 4 )PPh 2 ] 2 Au} + ClO − 4 ( 3a ), in which the metal center is exclusively P‐coordinated. Treatment of [(tht) 2 Au]ClO 4 with ligand 1 (1:1) affords the mixed P/S‐coordinated complex 4 , the structure of which has been confirmed by single‐crystal X‐ray diffraction. The reaction of ligand 1 with [(Ph 3 P)Au] + BF − 4 leads to a mixture of products which are components of an equilibrium between the unsymmetrical salt {[(2‐NH 2 C 6 H 4 )PPh 2 ]Au(PPh 3 )} BF − 4 with the two symmetrical species 3b (the BF − 4 analogue of 3a ) and [(Ph 3 P) 2 Au] + BF − 4 , With {[(Ph 3 P)Au] 3 O} + BF − 4 as the aurating agent, the ligand 1 (molar ratio 1:1) is converted into a polynuclear complex 7 , which is tentatively assigned a structure with intimate aggregation of six gold atoms.