Reed McNeil Izatt is a Charles E. Maw Professor of Chemistry, Emeritus, at Brigham Young University in Provo, Utah. His field of research was macrocyclic chemistry and metal separation technologies
... Reed M. Izatt*, David V. Dearden, Evan R. Witt, Don W. McBride, Jr., and James J. Chrictensen... more ... Reed M. Izatt*, David V. Dearden, Evan R. Witt, Don W. McBride, Jr., and James J. Chrictensen* Departments of Chemistry and Chemical Engineering and Contribution No. ... Dev., 10, 215 (1979). P. Stroeve and PP Varanasi, Sep. Purification Methods, 11, 29 (1982). ...
Separation of metal cations in aqueous solution by a macrocycle-mediated Dual Hollow Fiber Membra... more Separation of metal cations in aqueous solution by a macrocycle-mediated Dual Hollow Fiber Membrane Contactor is described. The advantages of this type of supported liquid membrane configuration include easily accessible source, receiving and membrane phases; ...
Solid materials bearing bonded organic functional groups are reviewed. The properties of the oxid... more Solid materials bearing bonded organic functional groups are reviewed. The properties of the oxide supporting materials, silica gel in particular, their chemical and physical properties and the nature of the surface residues are part of this review. Processes leading to modification of the silica gel surface with mono- and polylayers of other oxides resulting in materials with modified properties as
Gas-phase methyl radicals may be produced in a catalytic manner from CH ~ Over pure and lithium-d... more Gas-phase methyl radicals may be produced in a catalytic manner from CH ~ Over pure and lithium-doped ~ ~ 0 . The suggest that surface 0-ions are responsible for hydrogen atom ... Conceptual contributions Of Dr. John Kolts. The work was SUP-ported by the Division Of Basic ...
Page 1. 1782 J. Am. Chem. SOC. Scheme 111" 0 - 0 + 3H, t72 W CBN + H, - 0 -24 to -25 a aH&qu... more Page 1. 1782 J. Am. Chem. SOC. Scheme 111" 0 - 0 + 3H, t72 W CBN + H, - 0 -24 to -25 a aH" values are in kcal/mol CBN are plotted in Figure 4. Acknowledgment. We with to thank the donors of the Petro-leum Research Fund ...
Calorimetric Titration Study of the Interaction of ... Some Uni-and Bivalent Cations with Benzo-1... more Calorimetric Titration Study of the Interaction of ... Some Uni-and Bivalent Cations with Benzo-15-crown-5, ... R. M. Izatt,* R. E. Terry, D. P. Nelson, Y. Chan, D. J. Eatough, JS Bradshaw, L. D. Hansen, and JJ Christensen Contribution from the Departments of ...
Page 1. J. Am. Chem. SOC. 1981,103, 1821-1827 1821 Hz), 6.63-6.78 (1 H, m); MS m/e 220.180, calcd... more Page 1. J. Am. Chem. SOC. 1981,103, 1821-1827 1821 Hz), 6.63-6.78 (1 H, m); MS m/e 220.180, calcd for CIJHuO 220.183. Acknowledgmed We are grateful to Professor A. Yoshikoshi, University, for a sample and spectra of ...
Ten new 8-hydroxyquinoline-containing diaza-18-crown-6 ligands and analogues were synthesized via... more Ten new 8-hydroxyquinoline-containing diaza-18-crown-6 ligands and analogues were synthesized via a one-pot or stepwise Mannich reaction, reductive amination, or by reacting diaza-18-crown-6 with 5,7-dichloro-2-iodomethyl-8-quinolinol in the presence of N,N-diisopropylethylamine. The Mannich reaction of N,N'-bis(methoxymethyl)diaza-18-crown-6 with 4-chloro-2-(1H-pyrazol-3-yl)phenol gave the NCH(2)N-linked bis(3-(5-chloro-2-hydroxy)pyrazol-1-ylmethyl)-substituted diazacrown ether (14) in a 98% yield. The reaction of bis(N,N'-methoxymethyldiaza)-18-crown-6 with 2.2 equiv of 10-hydroxybenzoquinoline gave only the monosubstituted diazacrown ether ligand (8). Interaction of some of the ligands with various metal ions was evaluated by a calorimetric titration technique at 25 degrees C in MeOH. Bis(8-hydroxyquinoline-2-ylmethyl)-substituted ligand 13 forms a very strong complex with Ba(2+) (log K = 11.6 in MeOH) and is highly selective for Ba(2+) over Na(+), K(+), Zn(2+), and Cu(2+) (selectivity factor > 10(6)). The (1)H NMR spectral studies of the Ba(2+) complexes with bis(8-hydroxyquinoline-2-ylmethyl)- and bis(5,7-dichloro-8-hydroxyquinoline-2-ylmethyl)-substituted diaza-18-crown-6 ligands (13 and 10) suggest that these complexes are cryptate-like structures with the two overlapping hydroxyquinoline rings forming a pseudo second macroring. UV-visible spectra of the metal ion complexes with selected ligands suggest that these ligands might be used as chromophoric or fluorophoric sensors.
Five new macrocyclic ligands each containing two sulfonamide groups have been prepared. Three of ... more Five new macrocyclic ligands each containing two sulfonamide groups have been prepared. Three of these compounds contain one or two chloro substituents and the other two have one or two pyridine subcyclic units. A seventeen-membered ring ligand (4) was found to ...
Journal of Inclusion Phenomena and Molecular Recognition in Chemistry, 1989
The transport of alkali metal cations by several macrocycles possessing two sulfonamide groups as... more The transport of alkali metal cations by several macrocycles possessing two sulfonamide groups as a part of an 18-, 20-, or 21-membered macroring has been studied. Some of these compounds were found to be more effective transport agents than the proton-ionizable ...
... Reed M. Izatt*, David V. Dearden, Evan R. Witt, Don W. McBride, Jr., and James J. Chrictensen... more ... Reed M. Izatt*, David V. Dearden, Evan R. Witt, Don W. McBride, Jr., and James J. Chrictensen* Departments of Chemistry and Chemical Engineering and Contribution No. ... Dev., 10, 215 (1979). P. Stroeve and PP Varanasi, Sep. Purification Methods, 11, 29 (1982). ...
Separation of metal cations in aqueous solution by a macrocycle-mediated Dual Hollow Fiber Membra... more Separation of metal cations in aqueous solution by a macrocycle-mediated Dual Hollow Fiber Membrane Contactor is described. The advantages of this type of supported liquid membrane configuration include easily accessible source, receiving and membrane phases; ...
Solid materials bearing bonded organic functional groups are reviewed. The properties of the oxid... more Solid materials bearing bonded organic functional groups are reviewed. The properties of the oxide supporting materials, silica gel in particular, their chemical and physical properties and the nature of the surface residues are part of this review. Processes leading to modification of the silica gel surface with mono- and polylayers of other oxides resulting in materials with modified properties as
Gas-phase methyl radicals may be produced in a catalytic manner from CH ~ Over pure and lithium-d... more Gas-phase methyl radicals may be produced in a catalytic manner from CH ~ Over pure and lithium-doped ~ ~ 0 . The suggest that surface 0-ions are responsible for hydrogen atom ... Conceptual contributions Of Dr. John Kolts. The work was SUP-ported by the Division Of Basic ...
Page 1. 1782 J. Am. Chem. SOC. Scheme 111" 0 - 0 + 3H, t72 W CBN + H, - 0 -24 to -25 a aH&qu... more Page 1. 1782 J. Am. Chem. SOC. Scheme 111" 0 - 0 + 3H, t72 W CBN + H, - 0 -24 to -25 a aH" values are in kcal/mol CBN are plotted in Figure 4. Acknowledgment. We with to thank the donors of the Petro-leum Research Fund ...
Calorimetric Titration Study of the Interaction of ... Some Uni-and Bivalent Cations with Benzo-1... more Calorimetric Titration Study of the Interaction of ... Some Uni-and Bivalent Cations with Benzo-15-crown-5, ... R. M. Izatt,* R. E. Terry, D. P. Nelson, Y. Chan, D. J. Eatough, JS Bradshaw, L. D. Hansen, and JJ Christensen Contribution from the Departments of ...
Page 1. J. Am. Chem. SOC. 1981,103, 1821-1827 1821 Hz), 6.63-6.78 (1 H, m); MS m/e 220.180, calcd... more Page 1. J. Am. Chem. SOC. 1981,103, 1821-1827 1821 Hz), 6.63-6.78 (1 H, m); MS m/e 220.180, calcd for CIJHuO 220.183. Acknowledgmed We are grateful to Professor A. Yoshikoshi, University, for a sample and spectra of ...
Ten new 8-hydroxyquinoline-containing diaza-18-crown-6 ligands and analogues were synthesized via... more Ten new 8-hydroxyquinoline-containing diaza-18-crown-6 ligands and analogues were synthesized via a one-pot or stepwise Mannich reaction, reductive amination, or by reacting diaza-18-crown-6 with 5,7-dichloro-2-iodomethyl-8-quinolinol in the presence of N,N-diisopropylethylamine. The Mannich reaction of N,N'-bis(methoxymethyl)diaza-18-crown-6 with 4-chloro-2-(1H-pyrazol-3-yl)phenol gave the NCH(2)N-linked bis(3-(5-chloro-2-hydroxy)pyrazol-1-ylmethyl)-substituted diazacrown ether (14) in a 98% yield. The reaction of bis(N,N'-methoxymethyldiaza)-18-crown-6 with 2.2 equiv of 10-hydroxybenzoquinoline gave only the monosubstituted diazacrown ether ligand (8). Interaction of some of the ligands with various metal ions was evaluated by a calorimetric titration technique at 25 degrees C in MeOH. Bis(8-hydroxyquinoline-2-ylmethyl)-substituted ligand 13 forms a very strong complex with Ba(2+) (log K = 11.6 in MeOH) and is highly selective for Ba(2+) over Na(+), K(+), Zn(2+), and Cu(2+) (selectivity factor > 10(6)). The (1)H NMR spectral studies of the Ba(2+) complexes with bis(8-hydroxyquinoline-2-ylmethyl)- and bis(5,7-dichloro-8-hydroxyquinoline-2-ylmethyl)-substituted diaza-18-crown-6 ligands (13 and 10) suggest that these complexes are cryptate-like structures with the two overlapping hydroxyquinoline rings forming a pseudo second macroring. UV-visible spectra of the metal ion complexes with selected ligands suggest that these ligands might be used as chromophoric or fluorophoric sensors.
Five new macrocyclic ligands each containing two sulfonamide groups have been prepared. Three of ... more Five new macrocyclic ligands each containing two sulfonamide groups have been prepared. Three of these compounds contain one or two chloro substituents and the other two have one or two pyridine subcyclic units. A seventeen-membered ring ligand (4) was found to ...
Journal of Inclusion Phenomena and Molecular Recognition in Chemistry, 1989
The transport of alkali metal cations by several macrocycles possessing two sulfonamide groups as... more The transport of alkali metal cations by several macrocycles possessing two sulfonamide groups as a part of an 18-, 20-, or 21-membered macroring has been studied. Some of these compounds were found to be more effective transport agents than the proton-ionizable ...
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