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Completing the Series: New Coordination Networks of Composition ³8[RE2(ADC)3(H2O)6]·2H2O with RE = Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Y and ADC²- = Acetylenedicarboxylate (-O2C-C=C-CO2-)
- Source :
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Zeitschrift für Anorganische und Allgemeine Chemie . Feb2018, Vol. 644 Issue 2, p127-135. 9p. - Publication Year :
- 2018
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Abstract
- The crystal structures of ³∞[RE2(ADC)3(H2O)6]·2H2O (RE = Pr, Nd, Sm, Eu, Tb, Dy) were solved and refined from X-ray single crystal data. They crystallize in a structure type already known for RE = La, Ce and Gd (P1, no. 2, Z = 2), which is characterized by REO9 polyhedra forming dimeric units being the nodes of a 3D framework structure linked by ADC²- anions (-O2C-C≡C-CO2- = acetylenedicarboxylate). From synchrotron powder diffraction data it was shown that isostructural coordination networks are formed for RE = Ho, Er, Y, whereas for RE = Tm, Yb, Lu a new structure type crystallizing in a highly complex crystal structure with a large orthorhombic unit cell is found. All compounds are obtained by slow evaporation of an aqueous solution containing RE(OAc)3·xH2O and acetylenedicarboxylic acid (H2ADC). The coordination networks of composition ³∞[RE2(ADC)3(H2O)6]·2H2O were thoroughly investigated by thermal analysis and for RE = Eu, Tb, a strong red and green photoluminescence was observed and investigated by means of UV/Vis spectroscopy. [ABSTRACT FROM AUTHOR]
- Subjects :
- *RARE earth metals
*CRYSTAL structure
*ESTERS
*X-ray diffraction
*LUMINESCENCE
Subjects
Details
- Language :
- English
- ISSN :
- 00442313
- Volume :
- 644
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Zeitschrift für Anorganische und Allgemeine Chemie
- Publication Type :
- Academic Journal
- Accession number :
- 127634243
- Full Text :
- https://doi.org/10.1002/zaac.201700361