The monoglyme [CH(3)OCH(2)CH(2)OCH(3)] and diglyme [CH(3)O(CH(2)CH(2)O)(2)CH(3)] adducts of the neodymium tris-hexauoroacetylacetonato [Nd(hfa)(3)center dot monoglyme center dot H(2)O and Nd(hfa)(3)center dot diglyme] have been synthesised in a single step reaction. They have been characterized by elemental analyzes, mass spectrometry, and IR spectroscopy. Single crystal X-ray diffraction studies provide evidence of a mononuclear nine-coordinated complex with a monocapped square antiprismatic structure for the Nd(hfa)(3)center dot diglyme (monoclinic system, space group P2(1)/n; a = 9.7717(2), b = 15.5723(4), c = 20.5620(5)angstrom, beta = 103.668(2)degrees; Z = 4). The Nd(hfa)(3)center dot monoglyme center dot H(2)O consists of asymmetric units containing two similar molecules (monoclinic system, space group = C2; a = 16.7057(4), b = 12.2579(4), c = 29.3734(5)angstrom, beta = 101.170(3)degrees, Z = 8). The mass transport properties of these adducts have been investigated by thermogravimetric analysis which revealed high volatility and good thermal stability with a residue left lower than 3%. The Nd(hfa)(3)center dot diglyme has been successfully applied to the low-pressure metal organic chemical vapor deposition (MOCVD) of NdBa(2)Cu(3)O(7) (delta) thin films.
|Titolo:||Neodymium beta-Diketonate Glyme Complexes: Synthesis and Characterization of Volatile|
|Data di pubblicazione:||2009|
|Appare nelle tipologie:||1.1 Articolo in rivista|