Results 21 to 30 of about 1,560 (144)

4-Acetylpiperazinium picrate [PDF]

Acta Crystallographica Section E Structure Reports Online, 2014
In the title salt, C6H13N2O+·C6H2N3O7−(systematic name: 4-acetylpiperazin-1-ium 2,4,6-trinitrophenolate), the piperazin-1-ium ring has a slightly distorted chair conformation. In the picrate anion, the mean planes of the twoo-NO2andp-NO2groups are twisted with respect to the benzene ring by 15.0 (2), 68.9 (4) and 4.4 (3)°, respectively. In the crystal,
Kavitha, C. N., Kaur, M., Jasinski, J. P., Yathirajan, H. S.   +3 more
openaire   +4 more sources

Liquid-Liquid Extraction of Transition Metal Cations by Glyoximes and Their Macrocyclic Glyoxime Ether Derivatives

Journal of Chemistry, 2013
Liquid-liquid extraction of various alkalis (Li+, Na+, K+, and Cs+), transition metals (Co2+, Ni2+, Cu2+, Zn2+, Cd2+, and Hg2+), and Pb2+ cations with phenylglyoxime (L1), p-tolylglyoxime (L2), N′-(4′-Benzo[15-crown-5])phenylaminoglyoxime (L3), and N ...
Nazan Karapinar, Emin Karapinar, Emine Ozcan   +2 more
doaj   +1 more source

2-Aminopyridinium picrate [PDF]

Acta Crystallographica Section E Structure Reports Online, 2010
In the title compound, C(5)H(7)N(2) (+)·C(6)H(2)N(3)O(7) (-), there are two crystallographically independent cations and anions (A and B) in the asymmetric unit. In both picrate anions, one of the nitro groups lies in the plane of the benzene ring [r.m.s.
M. S. Sivaramkumar, R. Velmurugan, M. Sekar, P. Ramesh, M. N. Ponnuswamy   +4 more
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2-Methylimidazolium picrate [PDF]

Acta Crystallographica Section E Structure Reports Online, 2010
In both ionic components of the title salt, C(4)H(7)N(2) (+)·C(6)H(2)N(3)O(7) (-), the rings are approximately planar; the maximum deviation from the mean plane is an order of magnitude larger in the picrate ring [0.0289 (10) Å] than in the imidazolium ring [0.0028 (10) Å.
Dutkiewicz, Grzegorz, Samshuddin, S., Narayana, B., Yathirajan, H. S., Kubicki, Maciej   +4 more
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4-Aminopyridinium picrate [PDF]

Acta Crystallographica Section E Structure Reports Online, 2010
In the title compound, C(5)H(7)N(2) (+)·C(6)H(2)N(3)O(7) (-), the 4-amino-pyridinium cation is essentially planar (r.m.s. deviation = 0.002 Å). The three nitro groups in the picrate anion are twisted away from the attached benzene ring [dihedral angles = 24.1 (1), 9.3 (3) and 21.4 (1)°].
P. Ramesh, R. Akalya, A. Chandramohan, M. N. Ponnuswamy   +3 more
openaire   +3 more sources

1-Piperonylpiperazinium picrate [PDF]

Acta Crystallographica Section E Structure Reports Online, 2014
In the cation of the title salt [systematic name: 4-(2H-1,3-benzodioxol-5-ylmethyl)piperazin-1-ium 2,4,6-trinitrophenolate], C12H17N2O2+·C6H2N3O7−, the piperazine ring adopts a slightly disordered chair conformation. The piperonyl ring system and the piperazine ring are twisted with respect to each other with an N—C—C—C torsion angle of 40.7 (2)°.
Kavitha, C. N., Kaur, M., Anderson, B. J., Jasinski, J. P., Yathirajan, H. S.   +4 more
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Solvent extraction of some univalent cations into nitrobenzene solution of dicarbollylcobaltate and extractants containing two or three oxyamide groups

Results in Chemistry
Stability constants of the complexes of some commercially available ligands, containing two or three oxyamide groups in nitrobenzene have been determined from the extraction data.
Petr Vaňura, Pavel Selucký
doaj   +1 more source

XLV.—The metallic picrates [PDF]

J. Chem. Soc., Trans., 1908
n ...
Silberrad, Oswald, Phillips, Henry Ablett   +1 more
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Imipraminium picrate [PDF]

Acta Crystallographica Section E Structure Reports Online, 2007
The title compound, C19H25N2+·C6H2N3O7−, is a mol­ecular salt arising from the reaction of imipramine and picric acid. The tertiary N atom of the side chain of the cation is protonated and forms a bifurcated N—H⋯(O,O) hydrogen bond to the anion. One of the acceptor O atoms is the deprotonated phenol O atom and the other is part of a nitro group.
Harrison, William T. A., Bindya, S., Ashok, M. A., Yathirajan, H. S., Narayana, B.   +4 more
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The Origins of Ploem's Filter Cube: A Pandora's Box

Journal of Microscopy, EarlyView.
Abstract Ploem's filter cube, central to modern epifluorescence microscopy, integrates three matched optical components: an excitation filter, an emission filter, and a dichroic mirror. Together, these elements enable the separation of excitation and emission light paths, producing high‐contrast fluorescence images.
Jack Gordon, Kaleah Balcomb, Vinod Maseedupally, Maitreyee Roy   +3 more
wiley   +1 more source