G. Malandrino, C. Benelli, Andrea Castelli
Sep 18, 1998
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0
Influential Citations
42
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Journal
Chemistry of Materials
Abstract
The monoglyme {CH3OCH2CH2OCH3}, diglyme {CH3O(CH2CH2O)2CH3}, and triglyme {CH3O(CH2CH2O)3CH3} adducts of the lanthanum trishexafluoroacetylacetonato {La(hfa)3·monoglyme·H2O, La(hfa)3·diglyme and La(hfa)3·triglyme} have been synthesized in a single-step reaction. They have been characterized by elemental analyses, mass spectrometry, IR spectroscopy, 1H and 13C NMR spectroscopy. Single-crystal X-ray diffraction studies provide evidence of a mononuclear 9-coordinated complex with a monocapped square antiprismatic structure for the La(hfa)3·diglyme (monoclinic system, space group = P21/c; a = 10.075(2) A, b = 15.599(4) A, c = 21.038(9) A, β = 103.48(5)°, Z = 4). The La(hfa)3·monoglyme·H2O consists of asymmetric units containing two similar molecules (monoclinic system, space group = P21/c; a = 21.812(7) A, b = 13.232(3) A, c = 22.100(6) A, β= 111.28(4)°, Z = 4), while a more complex structure having asymmetric tetramolecular units has been found in the case of the La(hfa)3·triglyme (monoclinic system, space g...