scholarly journals Novel yttrium and zirconium catalysts featuring reduced Ar-BIANH2 ligands for olefin hydroamination (Ar-BIANH2 = bis-arylaminoacenaphthylene)

2016 ◽  
Vol 40 (12) ◽  
pp. 10285-10293 ◽  
Author(s):  
Alessandro Cimino ◽  
Filippo Moscatelli ◽  
Francesco Ferretti ◽  
Fabio Ragaini ◽  
Stéphane Germain ◽  
...  
Keyword(s):  
Zirconium Complex ◽  
Zirconium Catalysts ◽  
Yttrium Complexes

Even demanding aminoalkenes can be cyclized by Ar-BIANH2 yttrium complexes; a related zirconium complex has been crystallographically characterized.

Colorimetric Determination of Fluoride in Drinking Groundwater using a Polymeric Zirconium Complex of 5-(2-Carboxyphenylazo)-8-Hydroxyquinoline

2013 ◽  
Vol 12 (7) ◽  
pp. 460-465
Author(s):  
Sameer Amereih ◽  
Zaher Barghouthi ◽  
Lamees Majjiad
Keyword(s):  
Drinking Water ◽  
Detection Limit ◽  
Complex Formation ◽  
Molar Absorptivity ◽  
Colorimetric Determination ◽  
Zirconium Complex ◽  
Reliable Determination ◽  
Percentage Recovery ◽  
Quantitation Limit

A sensitive colorimetric determination of fluoride in drinking water has been developed using a polymeric zirconium complex of 5-(2-Carboxyphenylazo)-8-Hydroxyquinoline as fluoride reagents. The method allowed a reliable determination of fluoride in range of (0.0-1.5) mg L-1. The molar absorptivity of the complex formation is 7695 ± 27 L mol-1 cm-1 at 460 nm. The sensitivity, detection limit, quantitation limit, and percentage recovery for 1.0 mg L-1 fluoride for the proposed method were found to be 0.353 ± 0.013 μg mL-1, 0.1 mg L-1, 0.3 mg L-1, and 101.7 ± 4.1, respectively.

ChemInform Abstract: Highly Active and Diastereoselective N,O- and N,N-Yttrium Complexes for Intramolecular Hydroamination.

ChemInform ◽  
2011 ◽  
Vol 42 (40) ◽  
pp. no-no
Author(s):  
Frank Lauterwasser ◽  
Paul G. Hayes ◽  
Warren E. Piers ◽  
Laurel L. Schafer ◽  
Stefan Braese
Keyword(s):  
Highly Active ◽  
Yttrium Complexes

Yttrium complexes with 3,6-bis(tert-butylcatecholate)

2017 ◽  
Vol 43 (8) ◽  
pp. 500-504 ◽  
Author(s):  
P. A. Petrov ◽  
D. G. Samsonenko
Keyword(s):  
Yttrium Complexes
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