scholarly journals Reversible formation and cleavage of Pt→Ag dative bonds in a pre-organized cavity of a luminescent heteropolynuclear platinum(ii) complex

2017 ◽  
Vol 53 (48) ◽  
pp. 6405-6408 ◽  
Author(s):  
Misa Ueda ◽  
Shinnosuke Horiuchi ◽  
Eri Sakuda ◽  
Yoshihide Nakao ◽  
Yasuhiro Arikawa ◽  
...  
Keyword(s):  
Reversible Formation ◽  
Heteropolynuclear Complex

A heteropolynuclear complex can reversibly capture an Ag(i) ion and release it from the pre-organized cavity by the concerted formation and cleavage of Pt→Ag dative bonds and Ag–C(ipso) bonds, respectively.

scholarly journals The reversible formation of cysteine sulfenic acid promotes B-cell activation and proliferation

2012 ◽  
Vol 42 (8) ◽  
pp. 2152-2164 ◽  
Author(s):  
Katie E. Crump ◽  
Daniel G. Juneau ◽  
Leslie B. Poole ◽  
Karen M. Haas ◽  
Jason M. Grayson
Keyword(s):  
B Cell ◽  
Cell Activation ◽  
B Cell Activation ◽  
Sulfenic Acid ◽  
Reversible Formation

scholarly journals EPR Spectroscopy Investigation of Cu2+Ions Adsorbed in Tannin-Formaldehyde Resins of Mimosa (Acacia mearnsii) Bark Extracts

2015 ◽  
Vol 2015 ◽  
pp. 1-5
Author(s):  
Marcelo H. Herbst ◽  
Ney V. Vugman
Keyword(s):  
Spectral Resolution ◽  
Epr Spectroscopy ◽  
Chemical Environment ◽  
Broad Line ◽  
Hyperfine Parameters ◽  
Acacia Mearnsii ◽  
Polymeric Network ◽  
Coordination Sites ◽  
Reversible Formation

The chemical environment of Cu2+ions adsorbed in tannin-formaldehyde resins ofAcacia mearnsiibark extracts, prepared from polybutene, is investigated by EPR spectroscopy at 300 K. The spectrum is simulated considering two isolated axial Cu(II) species (Species 1:A∥=16.50(5) mT,A⊥=1.20(10) mT,g∥=2.28(1), andg⊥=2.08(1); Species 2:A∥=15.00(5) mT,A⊥=1.50(10) mT,g∥=2.32(1), andg⊥=2.05(2)), superposed to a broad line (giso=2.14(1); linewidth = 30.0(5) mT) assigned to Cu(II) aggregates. Measurements at 77 K did not improve spectral resolution. Heating at 413 K changes the hyperfine parameters of Species 2 (A∥=14.20(5) mT,A⊥=1.20(10) mT,g∥=2.33(1), andg⊥=2.07(2)) and slightly modifies the parameters of the broad line (giso=2.11(2); linewidth = 40.00(50) mT) but does not change Species 1, assigned to Cu(II) species immobilized into resin pores in cathecolate-type coordination sites. Species 2 is assigned to Cu(II) species immobilized at the outer resin surface. Upon extended heating, a reversible formation of semiquinone-type paramagnetic radicals (giso=2.0037(1)) is observed, assigned to the partial collapse of the resin polymeric network.

The interaction of rare earth chlorides with 4,4′-bipyridine for the reversible formation of template based luminescent Ln-N-MOFs

2010 ◽  
Vol 39 (2) ◽  
pp. 461-468 ◽  
Author(s):  
Christoph J. Höller ◽  
Marit Mai ◽  
Claus Feldmann ◽  
Klaus Müller-Buschbaum
Keyword(s):  
Rare Earth ◽  
Reversible Formation

Reversible formation of a PdCx phase in Pd nanoparticles upon CO and O2 exposure

2012 ◽  
Vol 14 (14) ◽  
pp. 4796 ◽  
Author(s):  
Olivier Balmes ◽  
Andrea Resta ◽  
Didier Wermeille ◽  
Roberto Felici ◽  
Maria E. Messing ◽  
...  
Keyword(s):  
Pd Nanoparticles ◽  
Reversible Formation

The dissolution of beryllia in molten alkali metal hydroxides

1965 ◽  
Vol 18 (11) ◽  
pp. 1719 ◽  
Author(s):  
ME Shying ◽  
RB Temple
Keyword(s):  
Alkali Metal ◽  
Water Vapour ◽  
Beryllium Oxide ◽  
Major Product ◽  
Kcal Mole ◽  
Metal Hydroxides ◽  
Temperature Range ◽  
Alkali Metal Hydroxides ◽  
Reversible Formation

Beryllium oxide shows a limited reversible solubility in molten alkali-metal hydroxides only when dissolved water vapour is present. The reaction taking place has been studied in detail. The results obtained are consistent with the reversible formation of the beryllate ion [Be(OH)4]2- as the major product, according to the overall equation BeO(solid) + H2O(dissolved) + 2OH- ↔ [Be(OH)4]2-(dissolved) The enthalpy of the reaction has been calculated to be 4.8 kcal/mole over the temperature range 240-510�.

Sign in / Sign up

Export Citation Format

Share Document