Journal
JOURNAL OF COORDINATION CHEMISTRY
Volume 55, Issue 7, Pages 781-793Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/0095897022000001539
Keywords
cerium(IV) complexes; beta-diketonate ligands; volatile metal complexes; chemical vapor deposition; crystal structures
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The Ce(IV) beta-diketonate complexes CeL4 [where L is txhd (2,2,6-trimethyl-3,5-heptanedionate) 1; tmod (2,2,7-trimethyl-3,5-octanedionate) 2; tmhd (2,2,6,6-tetramethyl-3,5-heptanedionate) 3] were prepared by the interaction of the sodium salt of the diketonate with cerium(III) nitrate hexahydrate in aqueous ethanol solution. Differential scanning calorimetry and thermogravimetric analysis showed that 1 has a significantly lower sublimation temperature, but higher decomposition temperature than 3. The solid-state structures of the three complexes were determined via single crystal x-ray diffraction methods. Complex 2, which does not sublime, had significantly closer intermolecular contacts than those found for 1 and 3.
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