|Title:||Photophysical properties, electronic and crystal structures of luminescent diphosphine digold(I)-pyridine-2-thiolate complexes||Authors:||SHIE-MING PENG
|Keywords:||Luminescent;Aurophilicity;Vapochromic;Thiolate;Vibroni||Issue Date:||2004||Publisher:||Taipei:National Taiwan University Dept Chem Engn||Start page/Pages:||-||Source:||Inorganica Chimica Acta (357),1405–1410||Abstract:||
Treatment of diphosphine digold(I) complexes, PP(AuCl)2 [PP¼bis(diphenylphosphino)methane, dppm; 1,6-bis(diphenylphosphino)
hexane, dpph], with two equivalents of pyridine-2-thiol (HNS) in the presence of NaOCH3 aﬀords two luminescent
diphosphine digold(I)-pyridine-2-thiolate complexes, dppm(AuSN)2 (1) and dpph(AuSN)2 (2), respectively. Both crystal structures
have been determined by crystallographic studies. The intramolecular aurophilic contact of 3.0478(3) is observed in the crystal
structure of 1, whereas there is not any aurophilic interaction present in the crystal lattices of 2. At room temperature, 1 shows a lowenergy
emission at ca. 660 nm as well as a very weak high-energy emission at ca. 496 nm in the solid state, but 2 shows only a strong
high-energy one at ca. 482 nm. Thus, the emission energy strongly dependent on the Au(I) Au(I) interaction can be demonstrated
in the diphosphine digold(I) thiolates studied herein.
|Appears in Collections:||化學系|
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