Synthesis, structures, and photoluminescence properties of novel lanthanide tetracyanoplatinates lacking Pt-Pt interactions
- Department of Chemistry, University of South Alabama, 307 University Boulevard, Chemistry Building, Room 223, Mobile, AL 36688 (United States)
The synthesis of a series of lanthanide tetracyanoplatinates all incorporating 2,2':6',2''-terpyridine (terpy) have been carried out by reaction of Ln{sup 3+} nitrate salts with terpy and potassium tetracyanoplatinate. The incorporation of different Ln{sup 3+} cations results in the isolation of [Ln(DMF){sub 2}(C{sub 15}H{sub 11}N{sub 3})(H{sub 2}O){sub 2}(NO{sub 3})]Pt(CN){sub 4} (Ln=La-Nd, Sm-Yb) under otherwise identical reaction conditions. These compounds have been isolated as single crystals and X-ray diffraction has been used to investigate their structural features. All of the reported compounds are isostructural. Crystallographic data for the representative Eu{sup 3+} compound (EuPt) are (MoKalpha, lambda=0.71073 A): monoclinic, space group P2{sub 1}/c, a=10.1234(4) A, b=18.7060(7) A, c=17.1642(5) A, beta=97.249(3){sup o}, V=3224.4(2), Z=4, R(F)=2.78% for 426 parameters with 7724 reflections with I>2sigma(I). The structure consists of a zero-dimensional, ionic salt containing complex [Eu(DMF){sub 2}(C{sub 15}H{sub 11}N{sub 3})(H{sub 2}O){sub 2}(NO{sub 3})]{sup 2+} cations and Pt(CN){sub 4}{sup 2-} anions. The complex cations contain the Eu{sup 3+} ions in a tri-capped trigonal prismatic coordination environment with one terdentate 2,2':6',2''-terpyridine molecule, one bidentate nitrate anion, two O-bound dimethylformamide molecules, and two coordinated water molecules. Photoluminescence data illustrate that EuPt displays intramolecular energy transfer from the coordinated terpy molecule to the Eu{sup 3+} cation. The uncoordinated tetracyanoplatinate anion also exhibits visible emission. - Graphical abstract: The synthesis of an isostructural series of lanthanide tetracyanoplatinates incorporating 2,2':6',2''-terpyridine are presented. Solid-state absorption and luminescence properties are discussed for the Eu{sup 3+} and La{sup 3+} compounds.
- OSTI ID:
- 21372575
- Journal Information:
- Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 4 Vol. 183; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ABSORPTION
ALKALI METAL COMPOUNDS
ANIONS
CATIONS
CHARGED PARTICLES
COHERENT SCATTERING
COMPLEXES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALLOGRAPHY
CRYSTALS
CYANIDES
DIFFRACTION
EMISSION
EUROPIUM IONS
IONS
LANTHANUM IONS
LUMINESCENCE
MONOCLINIC LATTICES
MONOCRYSTALS
NITRATES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHOTOLUMINESCENCE
PHOTON EMISSION
PLATINUM COMPOUNDS
POTASSIUM COMPOUNDS
RARE EARTH COMPLEXES
SCATTERING
SORPTION
SPACE GROUPS
SYMMETRY GROUPS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION