Luminescent silver nitrate complexes of bis[2-(diphenylphosphano)phenyl]ether (DPEphos): Crystal structure of [Ag(DPEphos)(py2SH)2]NO3

Polyhedron ◽  
2012 ◽  
Vol 31 (1) ◽  
pp. 502-505 ◽  
Author(s):  
George Christofidis ◽  
Philip J. Cox ◽  
Paraskevas Aslanidis
1991 ◽  
Vol 46 (7) ◽  
pp. 912-918 ◽  
Author(s):  
Hubert Schmidbaur ◽  
Angelika Mair ◽  
Gerhard Müller ◽  
Joachim Lachmann ◽  
Siegfried Gamper

Pyrazole, 1,2,4-triazole, and 8-amino-quinoline form complexes as neutral ligands with silver nitrate in slightly acidic aqueous medium. With pyrazole a 2:1 complex (1) is obtained. The crystal structure determination revealed an ionic structure with independent NO3- anions and centrosymmetrical (pyr)2Ag+ cations with a linear coordination geometry at the silver atoms. The reactions with 1,2,4-triazole and 8-amino-quinoline yield dimeric 1:1 complexes (2,3), in which the silver atoms are bridged by the ligands and have short contacts with nitrate oxygen atoms. The coordination geometry of the metals can thus be described as distorted tetrahedral. A 1:1 complex with 2,3-diphenyl-1,2,4-triazole (2a) and a 2:1 complex with 8-hydroxy-quinoline (4) have also been prepared, but not characterized in detail.


Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 185
Author(s):  
Nina Arnosti ◽  
Marco Meyer ◽  
Alessandro Prescimone ◽  
Edwin C. Constable ◽  
Catherine E. Housecroft

The preparation and characterization of [Cu(POP)(biq)][PF6] and [Cu(xantphos)(biq)][PF6] are reported (biq = 1,1′-biisoquinoline, POP = bis(2-(diphenylphosphanyl)phenyl)ether, and xantphos = (9,9-dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphane). The single crystal structure of [Cu(POP)(biq)][PF6] 0.5Et2O was determined and compared to that in three salts of [Cu(POP)(bq)]+ in which bq = 2,2′-biquinoline. The P–C–P angle is 114.456(19)o in [Cu(POP)(biq)]+ compared to a range of 118.29(3)–119.60(3)o [Cu(POP)(bq)]+. There is a change from an intra-POP PPh2-phenyl/(C6H4)2O-arene π-stacking in [Cu(POP)(biq)]+ to a π-stacking contact between the POP and bq ligands in [Cu(POP)(bq)]+. In solution and at ambient temperatures, the [Cu(POP)(biq)][PF6]+ and [Cu(xantphos)(biq)]+ cations undergo several concurrent dynamic processes, as evidenced in their multinuclear NMR spectra. The photophysical and electrochemical behaviors of the heteroleptic copper (I) complexes were investigated, and the effects of changing from bq to biq are described. Short Cu···O distances within the [Cu(POP)(biq)]+ and [Cu(xantphos)(biq)]+ cations may contribute to their very low photoluminescent quantum yields.


Polyhedron ◽  
1992 ◽  
Vol 11 (1) ◽  
pp. 49-52 ◽  
Author(s):  
Dalius S. Sagatys ◽  
Raymond C. Bott ◽  
Graham Smith ◽  
Karl A. Byriel ◽  
Colin H.L. Kennard

1966 ◽  
Vol 5 (8) ◽  
pp. 1399-1400 ◽  
Author(s):  
N. C. Baenziger ◽  
H. L. Haight ◽  
R. Alexander ◽  
J. R. Doyle

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