Results 211 to 220 of about 182,639 (263)

Zinc(ii) complexes of constrained antiviral macrocycles

Dalton Transactions, 2012
The configurations of metallocyclams are of interest in relation to protein recognition and anti-HIV activity. We have synthesised four novel zinc(II) complexes with hexyl-Me(2)-cyclam (HMC; 3,14-dimethyl-2,6,13,17-tetraazatricyclo(16.4.0.0(7,12))docosane), 1, and naphthyl-hexyl-Me(2)-cyclam (NHMC; 2,13-bis(1-naphthylmethyl)-5,16-dimethyl-2,6,13,17 ...
Allison, Ross, Jong-Ha, Choi, Tina M, Hunter, Christophe, Pannecouque, Stephen A, Moggach, Simon, Parsons, Erik, De Clercq, Peter J, Sadler   +7 more
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Asymmetric Indolylmaleimide Derivatives and Their Complexation with Zinc(II)−Cyclen

The Journal of Physical Chemistry A, 2005
The spectroscopic properties of two asymmetric indolylmaleimide derivatives, 4-bromo-3-(1'H-indol-3'-yl)maleimide and 4-methyl-3-(1'H-indol-3'-yl)maleimide, are investigated. The bromo derivative was crystallized and its X-ray structure was determined. Both compounds are strongly colored while their separate components (indole and maleimide) absorb in ...
Kaletas Basak Kuekrer, Joshi Hem C., Van der Zwan Gert, Fanti Marianna, ZERBETTO, FRANCESCO, Goubitz Kees, De Cola Luisa, Koenig Burkhard, Williams Rene M.   +8 more
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A new insulin-mimetic bis(allixinato)zinc(II) complex: structure?activity relationship of zinc(II) complexes

JBIC Journal of Biological Inorganic Chemistry, 2004
During the investigation of the development of insulin-mimetic zinc(II) complexes with a blood glucose-lowering effect in experimental diabetic animals, we found a potent bis(maltolato)zinc(II) complex, Zn(ma)(2), exhibiting significant insulin-mimetic effects in a type 2 diabetic animal model.
Yusuke, Adachi, Jiro, Yoshida, Yukihiro, Kodera, Akira, Kato, Yutaka, Yoshikawa, Yoshitane, Kojima, Hiromu, Sakurai   +6 more
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Iron(ii) and zinc(ii) monohelical binaphthyl salen complexes

Chemical Communications, 2005
A new chiral binaphthyl salen ligand with rigid polyaromatic sidearms gives monohelical complexes (Fe(II) and Zn(II)) of predetermined handedness.
Alexander V, Wiznycia, John, Desper, Christopher J, Levy   +2 more
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Zinc(II) and copper(II) complexes with hydroxypyrone iron chelators

Journal of Inorganic Biochemistry, 2015
High stability of the complexes formed at physiological pH is one of the basic requisites that a good iron chelator must possess. At the same time the chelating agent must be selective toward iron, i.e., the stability of iron complexes must be significantly higher than that of the complexes formed with essential metal ions, in order that these last ...
LACHOWICZ, JOANNA IZABELA, NURCHI, VALERIA MARINA, CRISPONI, GUIDO, Jaraquemada Pelaez MDG, Ostrowska M, Jezierska J, Gumienna Kontecka E, Peana M, Zoroddu MA, Choquesillo Lazarte D, Niclós Gutiérrez J, González Pérez JM   +11 more
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Zinc(II) Complex of Urocanic Acid

Acta Crystallographica Section C Crystal Structure Communications, 1995
In the title compound, tetraaquabis(4-imidazoleacrylato)zinc(II), [Zn(C 6 H 5 N 2 O 2 ) 2 (H 2 O) 4 ], the Zn atom has a quasi-octahedral coordination environment with four water O atoms in a square-planar arrangement and two N atoms of the imidazole ring in trans positions. The acrylic acid side chain is partially disordered.
N. Okabe, Y. Sasaki
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Phenoxyl Radical Complexes of Zinc(II)

Journal of the American Chemical Society, 1997
A series of phenoxyl radical complexes of zinc(II) have been generated in solution and, in one instance, isolated as solid material (5) in order to study their spectroscopic features by EPR, resonance Raman, and UV−vis spectroscopy. They serve as model complexes for the active form of the copper containing fungal enzyme galactose oxidase. The complexes
Achim Sokolowski, Jochen Müller, Thomas Weyhermüller, Robert Schnepf, Peter Hildebrandt, Knut Hildenbrand, Eberhard Bothe, Karl Wieghardt   +7 more
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Inorganic complexation of Zinc (II) in seawater

Geochimica et Cosmochimica Acta, 1990
Formation constants for zinc complexation by bicarbonate, carbonate, and oxalate, on the molal concentration scale, were determined through observation of aqueous/tributyl phosphate distribution equilibria. At 25°C in our 0.68 molal ionic strength mixtures (0.55 m NaCl plus 0.13 m NaClO4-NaHCO3) we obtained the following results: Hβ'1 = [ZnHCO3+][Zn2+
Stanley, J. K., Byrne, R. H.
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Zinc(II) complexes of 2,4-dithiobiuret

Spectrochimica Acta Part A: Molecular Spectroscopy, 1981
Abstract The zinc(II) complexes of 2,4-dithiobiuret (Hdtb = L) ZnL 2 X 2 (X = Cl, Br, I) and ZnL x A 2 (A = NO 3 and SO 4 /2, x = 2.5; A = ClO 4 , x = 2) have been prepared and investigated by conductometric, i.r. and Raman methods. In these compounds Hdtb behaves as S -monodentate in the ZnL 2 X 2 and as S,S-bidentate ligand in the ZnL x
Wanda Malavasi, Anna Pignedoli, Giorgio Peyronel   +2 more
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Mixed Ligand Complexes of Zinc(II)

Zeitschrift für anorganische und allgemeine Chemie, 1968
AbstractTetrahalo zinc(II) complexes were reacted with 4‐vinyl pyridine (4‐vpy), 4‐methyl pyridine (4‐mepy) and thiourea (tu) in ethanolic medium. The following mixed ligand anionic complexes were characterised: [ZnBr3L]− (L = 4‐vpy, 4‐mepy); [ZnCl3L]− (L  tu); [ZnBr3L2]− (L = 4‐mepy); [ZnBr3L2]− (L  tu).
S. Guru, D. V. Ramana Rao
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