Molecular copper-barium compounds. Syntheses, crystal structures, and magnetic properties of two sandwich copper-barium complexes: BaCu[sub 4](bdmap)[sub 4](PyO)[sub 4](O[sub 2]CCF[sub 3])[sub 2][center dot]0. 5THF and BaCu[sub 4](deae)[sub 4](Pyo)[sub 4](O[sub 2]CCF[sub 3])[sub 2] (bdmap = 1,3-bis(dimethylamino)-2-propanolato, PyO = deprotonated 2-hydroxypyridine, deae = 2-(diethylamino)ethanolato)
- Univ. of Windsor, Ontario (Canada)
- Michigan State Univ., East Lansing (United States)
The recent discovery of high-temperature superconductors has stimulated the intense research in molecular complexes developed as precursors for high T[sub c] superconductors by chemical processes. While most of the complexes previously reported have been homonuclear species, the authors have been interested in multi-component molecular complexes containing barium, yttrium, and copper with structures resembling those of high-temperature superconductors. Such molecular complexes might not only find direct use as precursors but may also serve as molecular models for the study of chemical and physical properties of superconductors. Two pentanuclear copper-barium complexes of formulas BaCu[sub 4](bdmap)[sub 4](PyO)[sub 4](O[sub 2]CCF[sub 3])[sub 2] (1) and BaCu[sub 4](deae)[sub 4](PyO)[sub 4](O[sub 2]CCF[sub 3])[sub 2] (2) have been synthesized by the reactions of Cu(OCH[sub 3])[sub 2] with Ba(O[sub 2]CCF[sub 3])[sub 2], 2-hydroxypyridine, and 1,3-bis(dimethylamino)-2-propanol (bdmapH) or 2-(diethylamino)ethanol (deaeH). Both compounds were characterized structurally. The barium ion is sandwiched between two dicopper anions, [Cu[sub 2]L[sub 2](PyO)[sub 2](O[sub 2]CCF[sub 3])][sup [minus]] (L = bdmap or deae) and coordinated by eight oxygen atoms. The oxygen atoms on the PyO[sup [minus]] ligands coordinate exclusively to the barium ion. 14 refs., 5 figs., 5 tabs.
- OSTI ID:
- 6623939
- Journal Information:
- Inorganic Chemistry; (United States), Journal Name: Inorganic Chemistry; (United States) Vol. 32:6; ISSN 0020-1669; ISSN INOCAJ
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPLEXES
ANIONS
BARIUM COMPLEXES
CHARGED PARTICLES
CHEMICAL PREPARATION
COHERENT SCATTERING
COMPLEXES
COPPER COMPLEXES
CRYSTAL STRUCTURE
DIFFRACTION
ELEMENTS
IONS
LATTICE PARAMETERS
LIGANDS
MAGNETIC PROPERTIES
MOLECULAR STRUCTURE
NONMETALS
OXYGEN
PHYSICAL PROPERTIES
SCATTERING
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
X-RAY DIFFRACTION