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Rediscovery of the Elements: The Periodic Table
Date: Summer 2007
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Description: Article recounting the history of the development of the Periodic Table. Sites pertinent to this development were visited by the authors, who provide related tourist information.
Contributing Partner: UNT College of Arts and Sciences
Permallink:digital.library.unt.edu/ark:/67531/metadc111217/
Rediscovery of the Elements: The Platinum Metals
Date: Spring 2009
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Description: Article describing the history of the platinum metals, from its discovery in the New World and subsequent experiments in Europe. Tourist information is provided regarding areas pertinent to the history of platinum.
Contributing Partner: UNT College of Arts and Sciences
Permallink:digital.library.unt.edu/ark:/67531/metadc111236/
Rediscovery of the Elements: The Road to Karlsruhe
Date: Spring 2007
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Description: Article describing the history of atomic weight and the events leading up to the Karlsruhe Congress of chemists. The authors visited several sites pertinent to these events and offer tourist information.
Contributing Partner: UNT College of Arts and Sciences
Permallink:digital.library.unt.edu/ark:/67531/metadc111216/
Rediscovery of the Elements: The Second Discovery of Vanadium
Date: Autumn 2004
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Description: Article describing how vanadium was "rediscovered" in Sweden and found to be identical to del Rio's sample. Includes tourist information regarding areas relevant to this portion of vanadium's history.
Contributing Partner: UNT College of Arts and Sciences
Permallink:digital.library.unt.edu/ark:/67531/metadc111200/
Rediscovery of the Elements: The Undiscovery of Vanadium
Date: Summer 2004
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Description: Article describing the how the original vanadium sample was misanalysed and identified as chromium. Includes tourist information regarding Paris, France.
Contributing Partner: UNT College of Arts and Sciences
Permallink:digital.library.unt.edu/ark:/67531/metadc111199/
Rediscovery of the Elements: Thorium
Date: Winter 2001
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Description: Article recounting the discovery of the element Thorium in Norway by Hans Morten Thrane Esmark. Maps and tourist information regarding the area are provided.
Contributing Partner: UNT College of Arts and Sciences
Permallink:digital.library.unt.edu/ark:/67531/metadc111179/
Rediscovery of the Elements: Titanium, Manaccan, Cornwall, England
Date: Autumn 2001
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Description: Article wherein James and Virginia Marshall visit Manaccan, England, to explore the site where titanium was first discovered. The area is described, as well as the man who discovered titanium, Reverend William Gregor.
Contributing Partner: UNT College of Arts and Sciences
Permallink:digital.library.unt.edu/ark:/67531/metadc111176/
Rediscovery of the Elements: Vanadium
Date: Winter 2003
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Description: Article describing the discovery of Vanadium and tracing the footsteps of the discoverers.
Contributing Partner: UNT College of Arts and Sciences
Permallink:digital.library.unt.edu/ark:/67531/metadc111195/
Rediscovery of the Elements: Yttrium and Johan Gadolin
Date: Spring 2008
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Description: Article describing the life and career of Johan Gadolin. Tourist information regarding locations significant to his history is included.
Contributing Partner: UNT College of Arts and Sciences
Permallink:digital.library.unt.edu/ark:/67531/metadc111224/
Redox Activation of Alkene Ligands in Platinum Complexes with Non-innocent Ligands
Date: December 19, 2009
Creator: Boyer, Julie L.; Cundari, Thomas R., 1964-; DeYonker, Nathan J.; Rauchfuss, Thomas B. & Wilson, Scott R.
Description: This article discusses redox activation of alkene ligands. The reactivity of metal olefin complexes with non-innocent ligands (NILs) was examined. Treatment of PtCl2(diene) with the deprotonated catechol or aminophenol ligands afforded the corresponding Pt(NIL)(diene) complexes. The Pt(ͭBAfPh)(COD), Pt(tBAfPh)(nbd), and Pt(O2C6H2tBu2)(COD) (H2tBAfPh = 2-(2-trifluoromethyl)anilino-4,6-di-tert-butylphenol, H2O2C6H2tBu2 = 3,5-di-tert-butylcatechol) complexes were examined by cyclic voltammetry. Treatment of Pt(tBAfPh)(COD) or Pt(tBAfPh)(ndb) with AgPF6 afforded the imino-semiquinones [Pt(tBAfPh)(COD)] PF6 or [Pt(tBAfPh)(nbd)]PF6 respectively. The [Pt(tBAfPh)(COD)] complex was unreactive toward nucleophiles, whereas the oxidized derivative, [Pt(tBAfPh)(COD)]PF6, rapidly and stereospecifically added alkoxides at the carbon trans to the phenolate. The Pt(tBAfPh)(COD), [Pt(tBAfPh)(COD)]PF6, Pt(tBAfPh)(C8H12OMe), and [Cp2Co][Pt-(tBAfPh)(C8H12OMe)] complexes were characterized crystallographically.
Contributing Partner: UNT College of Arts and Sciences
Permallink:digital.library.unt.edu/ark:/67531/metadc77133/