|
Showing 1 - 1 of
1 matches in All Departments
The thesis focuses on the syntheses, structural characterizations
and chemical bonding analyses for several ternary R-M-Ge (R = rare
earth metal; M = another metal) intermetallics. The challenges in
understanding the main interactions governing the chemistry of
these compounds, which lead to our inability to predict their
formation, structure and properties, are what provided the
motivation for this study. In particular, the R2MGe6 (M = Li, Mg,
Al, Cu, Zn, Pd, Ag), R4MGe10-x (M = Li, Mg), R2Pd3Ge5, Lu5Pd4Ge8,
Lu3Pd4Ge4 and Yb2PdGe3 phases were synthesized and structurally
characterized. Much effort was put into the stabilization of
metastable phases, employing the innovative metal flux method, and
into the accurate structure solution of twinned crystals.
Cutting-edge position-space chemical bonding techniques were
combined with new methodologies conceived to correctly describe the
Ge-M, Ge-La and also La-M polar-covalent interactions for the
La2MGe6 (M = Li, Mg, Al, Cu, Zn, Pd, Ag) series. The present
results constitute a step forward in our comprehension of ternary
germanide chemistry as well as providing a good playground for
further investigations.
|
|