« Previous Abstract"Personal exposure to VOCs (BTX) and women health risk assessment in rural kitchen from solid biofuel burning during cooking in West Bengal, India"    Next AbstractRole of snow and cold environment in the fate and effects of nanoparticles and select organic pollutants from gasoline engine exhaust »

Inorg Chem

Title:		Tetranuclear Au(2)Cu(2) Clusters with Butterfly- and Planar-Shaped Metal Cores: Strong Rigidochromism Induced by Jahn-Teller Distortion in Two-Coordinated Gold(I) Centers
Author(s):		Nayeri S; Jamali S; Jamjah A; Samouei H;
Address:		"Department of Chemistry , Sharif University of Technology , P.O. Box 11155-3516, Tehran , Iran. Department of Chemistry , Texas A&M University , P.O. Box 30012, College Station , Texas 77842-3012 , United States"
Journal Title:		Inorg Chem
Year:		2019
Volume:		20190905
Issue:		18
Page Number:		12122 - 12131
DOI:		10.1021/acs.inorgchem.9b01414
ISSN/ISBN:		1520-510X (Electronic) 0020-1669 (Linking)
Abstract:		"Two tetranuclear Au(2)Cu(2) cluster complexes [Au(2)Cu(2)(mu-(PPh(2))(2)py)(2)(mu-OH)](PF(6))(3), 2, and [Au(2)Cu(2)Cl(2)(mu-(PPh(2))(2) py)(2)](OTf)(2), 4, have been prepared by the reactions of precursor complexes [Au(2)(mu-(PPh(2))(2)py)(2)](OTf)(2), 1, and [Cu(2)(mu-(PPh(2))(2)py)(2)(mu-SMe(2))(OTf)(2)], 3, with [Cu(NCCH(3))(4)]PF(6) and AuCl(SMe(2)), respectively. The crystal structures of complexes 2 and 4 were determined by X-ray crystallography, indicating a butterfly-shaped Au(2)Cu(2) metal core for 2 and a planar-shaped Au(2)Cu(2) metal core for 4. In complex 2, the Cu atoms occupy the edge-sharing bond, while in complex 4, alternating Au and Cu atoms occupy the tetragon vertices. The optical properties of the complexes were investigated by experimental and computational methods. Although complex 2 displayed a luminescence vapochromic behavior in the presence several volatile organic compounds, complex 4 indicated only an distinguishable change in its emission color when it was exposed to vapor of hydrogen-bond donor solvents. The calculations showed that 2 undergoes an unsymmetrical distortion in its two-coordinated gold(I) centers upon excitation to the first triplet excited state. This distortion induces a large Stokes shift and a strong rigidochromism behavior that is unprecedented for two-coordinated gold(I) complexes"
Keywords:
Notes:		"PubMed-not-MEDLINENayeri, Sara Jamali, Sirous Jamjah, Ali Samouei, Hamidreza eng 2019/09/17 Inorg Chem. 2019 Sep 16; 58(18):12122-12131. doi: 10.1021/acs.inorgchem.9b01414. Epub 2019 Sep 5"