Synthesis and Structural Characterization of Five-Coordinate Aluminum Complexes Containing Diarylamido Diphosphine Ligands

2009 ◽  
Vol 48 (12) ◽  
pp. 5480-5487 ◽  
Author(s):  
Pei-Ying Lee ◽  
Lan-Chang Liang
Keyword(s):  
Structural Characterization ◽  
Diphosphine Ligands ◽  
Aluminum Complexes

Structural Characterization of Al10O6iBu16(μ-H)2, a High Aluminum Content Cluster:  Further Studies of Methylaluminoxane (MAO) and Related Aluminum Complexes

2007 ◽  
Vol 46 (1) ◽  
pp. 44-47 ◽  
Author(s):  
Feng-Jung Wu ◽  
Larry S. Simeral ◽  
Anthony A. Mrse ◽  
Jan L. Eilertsen ◽  
Lacramioara Negureanu ◽  
...  
Keyword(s):  
Structural Characterization ◽  
Aluminum Content ◽  
High Aluminum Content ◽  
Aluminum Complexes ◽  
High Aluminum

Synthesis and structural characterization of m-terphenyl Schiff base ligands and their aluminum complexes

2004 ◽  
Vol 82 (9) ◽  
pp. 1346-1352 ◽  
Author(s):  
Diane A Dickie ◽  
Hanifa Jalali ◽  
Rahul G Samant ◽  
Michael C Jennings ◽  
Jason AC Clyburne
Keyword(s):  
Schiff Base ◽  
Schiff Bases ◽  
Structural Characterization ◽  
Condensation Reaction ◽  
Schiff Base Ligands ◽  
X Ray ◽  
X Ray Crystallography ◽  
Aluminum Complexes

2,4,6-Triphenylbenzaldehyde 1 undergoes a condensation reaction with 2-aminophenol to give N-(2′,4′,6′-triphenylbenzylidene)-2-iminophenol (TPIP) 2. The imine 2 can be reduced with NaBH4 in ethanol to form N-(2′,4′,6′-triphenylbenzyl)-2-aminophenol (TPAP) 3. Addition of trimethylaluminum to 2 or 3 results in the formation of the complexes TPIP-AlMe2·AlMe3 (4) or TPAP-AlMe2 (5). Compounds 2, 3, and 4 have been crystallographically characterized.Key words: N,O ligands, aluminum, m-terphenyl, Schiff bases, X-ray crystallography.

Synthesis and Structural Characterization of (1,4-Dihydropyrid-1-yl)aluminum Complexes

1999 ◽  
Vol 38 (21) ◽  
pp. 4700-4704 ◽  
Author(s):  
Karl Hensen ◽  
Alexander Lemke ◽  
Thorsten Stumpf ◽  
Michael Bolte ◽  
Holger Fleischer ◽  
...  
Keyword(s):  
Structural Characterization ◽  
Aluminum Complexes

New ultrastructural findings about Borrelia burgdorferi by cryofixation, negative staining, thin sectioning and scanning techniques

1990 ◽  
Vol 48 (3) ◽  
pp. 582-583
Author(s):  
S. F. Hayes ◽  
M. D. Corwin ◽  
T. G. Schwan ◽  
D. W. Dorward ◽  
W. Burgdorfer
Keyword(s):  
Lyme Disease ◽  
Borrelia Burgdorferi ◽  
Structural Characterization ◽  
Negative Staining ◽  
Low Speed ◽  
Thin Sectioning ◽  
Ultrastructural Findings

Characterization of Borrelia burgdorferi strains by means of negative staining EM has become an integral part of many studies related to the biology of the Lyme disease organism. However, relying solely upon negative staining to compare new isolates with prototype B31 or other borreliae is often unsatisfactory. To obtain more satisfactory results, we have relied upon a correlative approach encompassing a variety EM techniques, i.e., scanning for topographical features and cryotomy, negative staining and thin sectioning to provide a more complete structural characterization of B. burgdorferi.For characterization, isolates of B. burgdorferi were cultured in BSK II media from which they were removed by low speed centrifugation. The sedimented borrelia were carefully resuspended in stabilizing buffer so as to preserve their features for scanning and negative staining. Alternatively, others were prepared for conventional thin sectioning and for cryotomy using modified procedures. For thin sectioning, the fixative described by Ito, et al.

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