Synthesis and structural characterization of new organo-diimido and organo-imido niobium and titanium complexes

2000 ◽  
pp. 2375-2382 ◽  
Author(s):  
Iván Dorado ◽  
Andrés Garcés ◽  
Carmen López-Mardomingo ◽  
Mariano Fajardo ◽  
Ana Rodríguez ◽  
...  
Keyword(s):  
Structural Characterization ◽  
Titanium Complexes

Synthesis and Structural Characterization of Hexacoordinate Silicon, Germanium, and Titanium Complexes of theE. coliSiderophore Enterobactin

2013 ◽  
Vol 19 (32) ◽  
pp. 10536-10542 ◽  
Author(s):  
Todor Baramov ◽  
Karlijn Keijzer ◽  
Elisabeth Irran ◽  
Eva Mösker ◽  
Mu-Hyun Baik ◽  
...  
Keyword(s):  
Structural Characterization ◽  
Silicon Germanium ◽  
Titanium Complexes

Synthesis and structural characterization of titanium complexes containing a sulfinyl-bridged bis(phenolato) ligand

Polyhedron ◽  
1998 ◽  
Vol 17 (5-6) ◽  
pp. 943-946 ◽  
Author(s):  
Jun Okuda ◽  
Stefan Fokken ◽  
Hak-Chul Kang ◽  
Werner Massa
Keyword(s):  
Structural Characterization ◽  
Titanium Complexes

Molecular structures of a series of substituted bis(η5-cyclopentadienyl)titanium dihalides Cp R 2TiX 2 [X = F, Cl, Br and I; R = CHPh2, CH(p-Tol)2 and adamantyl]

2018 ◽  
Vol 74 (4) ◽  
pp. 442-451 ◽  
Author(s):  
Tim Oswald ◽  
Nicolai Lauterbach ◽  
Marc Schmidtmann ◽  
Rüdiger Beckhaus
Keyword(s):  
Structural Characterization ◽  
Antitumor Agents ◽  
Molecular Structures ◽  
Exchange Reactions ◽  
Titanium Complexes ◽  
Hydrogen Halides ◽  
Metathesis Reactions

Metallocene dihalides and derivatives thereof are of great interest as precursors for catalysts in polymerization reactions, as antitumor agents and, due to their increased stability, as suitable starting materials in salt metathesis reactions and the generation of metallocene fragments. We report the synthesis and structural characterization of a series of eleven substituted bis(η5-cyclopentadienyl)titanium dihalides, namely bis[η5-1-(diphenylmethyl)cyclopentadienyl]difluoridotitanium(IV), [Ti(C18H15)2F2], bis{η5-1-[bis(4-methylphenyl)methyl]cyclopentadienyl}difluoridotitanium(IV), [Ti(C20H19)2F2], and bis{η5-1-[bis(adamantan-2-yl)methyl]cyclopentadienyl}difluoridotitanium(IV), [Ti(C15H19)2F2], together with the bromide and iodide analogues, and the chloride analogues of the diphenylmethyl and adamantyl complexes. These eleven complexes were prepared by the reaction of the corresponding bis(η5:η1-pentafulvene)titanium complexes with different hydrogen halides (Cl, Br and I). The titanocene fluorides become available via chloride–fluoride exchange reactions.

Synthesis and Structural Characterization of Lithium and Titanium Complexes Bearing a Bulky Aryloxide Ligand Based on a Rigid Fused-Ring s-Hydrindacene Skeleton

2016 ◽  
Vol 55 (13) ◽  
pp. 6643-6652 ◽  
Author(s):  
Shoya Kanazawa ◽  
Taishi Ohira ◽  
Shun Goda ◽  
Naoki Hayakawa ◽  
Tomoharu Tanikawa ◽  
...  
Keyword(s):  
Structural Characterization ◽  
Titanium Complexes ◽  
Fused Ring

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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