Universität zu Köln

Hemmer, Eva ORCID: 0000-0002-9222-1219, Cavelius, Christian, Huch, Volker and Mathur, Sanjay (2015). Templating Influence of Molecular Precursors on Pr(OH)(3) Nanostructures. Inorg. Chem., 54 (13). S. 6267 - 6281. WASHINGTON: AMER CHEMICAL SOC. ISSN 1520-510X

Full text not available from this repository.

Abstract

Four new praseodymium alkoxo and amido compounds ([Pr-3(mu(3)-OtBu)(2)(mu(2)-OtBu)(3)(OtBu)(4)(HOtBu)(2)] (1), [Pr{OC(tBu)(3)}(3)(THF)] (2), [PrCl{N-(SiMe3)(2)}(2)(THF)](2) (3), and [PrCl{OC(tBu)(3)}(2)(THF)](2) (4)) were synthesized and structurally characterized by single-crystal X-ray diffraction analysis. Application of these compounds in solvothermal synthesis of praseodymium oxide/hydroxide nanostructures showed their templating influence on the morphology and phase composition of the resulting solid-state materials. Differential reactivity of the chosen alkoxide ligands toward water and the different arrangements of metal oxygen units in the studied precursor compounds strongly influenced the kinetics of hydrolysis and cross-condensation reactions as manifested in the morphological changes and phase composition of the final products. Thermal decomposition studies of 1-4 confirmed their conversion into the corresponding oxide phases. Activation of compounds 1, 2, and 4 by either a base or a stoichiometric amount of water showed the distinct influence of their chemical configuration on the obtained nanopowders: whereas 1 solely produced nanorods of Pr(OH)(3), 2 predominantly formed a mixture of rod-shaped and spherical particles. The solvothermal decomposition of 4 resulted in Pr(OH)(2)Cl or PrOCl due to the presence of Cl ligands in the molecular precursor. The resultant Materials were thoroughly characterized to demonstrate the relationship between precursor chemistry and the processing parameters that are clearly manifested in the morphology and phase of the final ceramics.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Hemmer, Eva UNSPECIFIED orcid.org/0000-0002-9222-1219 UNSPECIFIED Cavelius, Christian UNSPECIFIED UNSPECIFIED UNSPECIFIED Huch, Volker UNSPECIFIED UNSPECIFIED UNSPECIFIED Mathur, Sanjay UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-398979
DOI:	10.1021/acs.inorgchem.5b00529
Journal or Publication Title:	Inorg. Chem.
Volume:	54
Number:	13
Page Range:	S. 6267 - 6281
Date:	2015
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	1520-510X
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Inorganic Chemistry
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language RING-OPENING POLYMERIZATION; CHEMICAL-VAPOR-DEPOSITION; OPTICAL-PROPERTIES; CRYSTAL-STRUCTURE; STRUCTURAL-CHARACTERIZATION; SOLVOTHERMAL TREATMENT; LANTHANIDE ALKOXIDE; CONTRAST AGENTS; L-LACTIDE; COMPLEXES Multiple languages Chemistry, Inorganic & Nuclear Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/39897