Acid-base reactions of the metallocubanes. Synthesis and structural characterization of Cu10[S2CCH(COO-t-C4H9)2]6[S2CC(COO-t-C4H9)2]2, a ten copper atom aggregate

1977 ◽  
Vol 99 (24) ◽  
pp. 8097-8099 ◽  
Author(s):  
D. Coucouvanis ◽  
D. Swenson ◽  
N. C. Baenziger ◽  
R. Pedelty ◽  
M. L. Caffery
Keyword(s):  
Structural Characterization ◽  
Copper Atom ◽  
Acid Base

Lewis-Base Adducts of Group 11 Metal(I) Compounds. LI. Synthesis and Structural Characterization of Mononuclear Chloro-, Bromo- and Iodo-pyridinebis(triphenylphosphine)copper(I) Complexes

1989 ◽  
Vol 42 (6) ◽  
pp. 895 ◽  
Author(s):  
LM Engelhardt ◽  
PC Healy ◽  
JD Kildea ◽  
AH White
Keyword(s):  
Single Crystal ◽  
Structural Characterization ◽  
Structure Determination ◽  
Copper Atom ◽  
Lewis Base ◽  
X Ray

Complexes [ XCu ( py )(PPh3)2], X = Cl, Br, I, py = pyridine, have been synthesized and characterized by single-crystal X-ray structure determination. Chloride and iodide derivatives have similar cells [ isomorphous (?) but not isostructural ], triclinic, pi, a = 19.5 A, b = 10.5, c = 9.6 � , α ≈ 66, β ≈ 86, γ ≈ 83�, Z = 2; the bromide is monoclinic, Cc, a 13.568(9), b 15.760(12), c 16.545(8) � , β 95.65(5)�, Z = 4. Cl, Br, I structures were refined to residuals of 0.042, 0.055, 0.039 for 4288, 2241, 4808 'observed' reflections. In all cases, the copper atom is four-coordinate; for such an array, Cu-X lengths are unusually short [2.318(2), 2.459(2), 2.636(1) � (Cl, Br, I) and Cu-N unusually long (2.14(1) � ], while (Cu-P) increase from 2.264 to 2.288 � across the series. The dominant aspect of the complexes is thus that of XCu (PPh3)2 solvated by pyridine.

Synthesis and structural characterization of some novel methoxyamino derivatives with acid-base and redox behavior

2018 ◽  
Vol 1173 ◽  
pp. 291-299 ◽  
Author(s):  
M. Bem ◽  
R. Baratoiu ◽  
C. Radutiu ◽  
C. Lete ◽  
S. Mocanu ◽  
...  
Keyword(s):  
Structural Characterization ◽  
Redox Behavior ◽  
Acid Base

scholarly journals Structural characterization of a completely alkyl-substituted Al–Sb Lewis acid–base adduct

2010 ◽  
Vol 695 (21) ◽  
pp. 2281-2283 ◽  
Author(s):  
Stephan Schulz ◽  
Andreas Kuczkowski ◽  
Martin Nieger ◽  
Heidi Saxell
Keyword(s):  
Lewis Acid ◽  
Structural Characterization ◽  
Acid Base

Reaction of N-heterocyclic carbenes with 13-vertex closo-carboranes: synthesis and structural characterization of zwitterionic salts of 13-vertex nido-carboranes

2015 ◽  
Vol 2 (1) ◽  
pp. 55-59 ◽  
Author(s):  
Fangrui Zheng ◽  
Zuowei Xie
Keyword(s):  
Structural Characterization ◽  
Heterocyclic Carbenes ◽  
Acid Base

13-Vertexcloso-carboranes and N-heterocyclic carbenes undergo a fast acid–base reaction to generate intermediates that are slowly converted to the final products.

Structural characterization of a pyrazolone-based heterocyclic dye and its acid-base adduct

2015 ◽  
Vol 112 ◽  
pp. 67-72 ◽  
Author(s):  
Hui-Fen Qian ◽  
Yin-Ge Wang ◽  
Yuan Dai ◽  
Jiao Geng ◽  
Wei-Gang Ruan ◽  
...  
Keyword(s):  
Structural Characterization ◽  
Acid Base

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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