scholarly journals Synthesis and characterization of 2-(2-benzhydrylnaphthyliminomethyl)pyridylnickel halides: formation of branched polyethylene

2014 ◽  
Vol 43 (8) ◽  
pp. 3339-3346 ◽  
Author(s):  
Erlin Yue ◽  
Qifeng Xing ◽  
Liping Zhang ◽  
Qisong Shi ◽  
Xiao-Ping Cao ◽  
...  
Keyword(s):  
Ethylene Polymerization ◽  
Synthesis And Characterization ◽  
Branched Polyethylene ◽  
Halide Complexes

The 2-(2-benzhydrylnaphthyliminomethyl)pyridylnickel halide complexes, activated by MAO or MMAO, showed high activities (up to 2.02 × 107 g(PE) mol−1(Ni) h−1) towards ethylene polymerization.

Synthesis and Characterization of Gold(III) Halide Complexes of Quinaldic Acid (Hqd), Methyl Quinaldate and Ethyl Quinaldate, and X-Ray Structure of [(HQd)2H] [AuBr4].H2O

1994 ◽  
Vol 47 (7) ◽  
pp. 1423 ◽  
Author(s):  
MAS Goher ◽  
AK Hafez ◽  
RJ Wang ◽  
XM Chen ◽  
TCW Mak
Keyword(s):  
Hydrogen Bond ◽  
Far Infrared ◽  
Synthesis And Characterization ◽  
Coordination Environment ◽  
X Ray ◽  
Quinaldic Acid ◽  
Halide Complexes ◽  
Monodentate Ligands ◽  
Far Infrared Spectra

Complexes of the types HAuX4.2HQd, where X = Cl or Br and HQd = quinaldic acid, and AuX3L2, where L is methyl or ethyl quinaldate , have been prepared and characterized. Quinaldic acid as well as methyl and ethyl quinaldates function as monodentate ligands in these complexes, whose stereochemistries are discussed in relation to the number of gold-halogen stretching frequencies observed in their far-infrared spectra. The measured conductivities of these complexes are also discussed. Single-crystal X-ray analysis of monohydrated HAuBr4.2HQd revealed that it should be formulated as [( HQd )2H][AuBr4].H2O, in which a pair of zwitterionic HQd moieties are connected by a strong O...H...O hydrogen bond, and the gold(III) atom is in an elongated octahedral coordination environment with two long Au-O bonds of 3.388(8) and 3.440(8)Ǻ.

Synthesis and characterization of alkenyl and alkyl substituted group 4 metallocene dichloride complexes: Applications in ethylene polymerization

2019 ◽  
Vol 899 ◽  
pp. 120890
Author(s):  
Jesús Ceballos-Torres ◽  
Santiago Gómez-Ruiz ◽  
Mariano Fajardo ◽  
Ana B. Pinar ◽  
Sanjiv Prashar
Keyword(s):  
Ethylene Polymerization ◽  
Synthesis And Characterization ◽  
Group 4
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