Chromium Complexes Supported by Phenyl Ether‐Pyrazolyl [N,O] Ligands as Catalysts for the Oligo‐ and Polymerization of Ethylene

2020 ◽  
Vol 34 (12) ◽  
Author(s):  
Jorge L.S. Milani ◽  
Osvaldo L. Casagrande
Keyword(s):  
Phenyl Ether ◽  
Chromium Complexes

scholarly journals Heteroleptic [Cu(P^P)(N^N)][PF6] Complexes: Effects of Isomer Switching from 2,2′-biquinoline to 1,1′-biisoquinoline

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 185
Author(s):  
Nina Arnosti ◽  
Marco Meyer ◽  
Alessandro Prescimone ◽  
Edwin C. Constable ◽  
Catherine E. Housecroft
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Nmr Spectra ◽  
Phenyl Ether ◽  
Quantum Yields ◽  
Dynamic Processes ◽  
Electrochemical Behaviors ◽  
Ambient Temperatures ◽  
Π Stacking

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.

ChemInform Abstract: PHOTOLYSIS OF BENZYL PHENYL ETHER

1978 ◽  
Vol 9 (14) ◽  
Author(s):  
H.-J. TIMPE ◽  
H.-J. FRIEDRICH ◽  
R. DIETRICH ◽  
J. BOECKELMANN ◽  
I. FRIEDEL
Keyword(s):  
Phenyl Ether ◽  
Benzyl Phenyl Ether

Cationic Copolymerization Behavior of Glycidyl Phenyl Ether with Seven-Membered Cyclic Carbonate

2005 ◽  
Vol 206 (5) ◽  
pp. 592-599 ◽  
Author(s):  
Hiroshi Morikawa ◽  
Atsushi Sudo ◽  
Haruo Nishida ◽  
Takeshi Endo
Keyword(s):  
Cyclic Carbonate ◽  
Phenyl Ether ◽  
Cationic Copolymerization

Highly regio- and stereo-controlled hydroformylation of ortho-substituted (η6-styrene)chromium complexes

1994 ◽  
Vol 483 (1-2) ◽  
pp. c1-c5 ◽  
Author(s):  
Jacques Brocard ◽  
Lydie Pélinski ◽  
Lucien Maciejewski ◽  
Saïd Naïli ◽  
Hervé Bricout ◽  
...  
Keyword(s):  
Chromium Complexes

Tricarbonyl-chromium complexes of benzannelated cycloproparenes

1989 ◽  
Vol 72 (7) ◽  
pp. 1618-1626 ◽  
Author(s):  
Paul Müller ◽  
Gérald Bernardinelli ◽  
Yvan Jacquier ◽  
Alessandra Ricca
Keyword(s):  
Chromium Complexes
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