Low-dimensional compounds containing cyanido groups. XXVIII. Crystal structure, spectroscopic and magnetic properties of two copper(II) tetracyanidoplatinate complexes with 1,2-diaminopropane

Journal Article · Fri May 15 04:00:00 EDT 2015 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2014.12.019· OSTI ID:22475595

Vavra, Martin ^[1]; Potočňák, Ivan ^[1]; Dušek, Michal ^[2]; Čižmár, Erik ^[3]; Ozerov, Mykhaylo; Zvyagin, Sergei A. ^[4]

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1. Institute of Chemistry, Faculty of Science, P.J. Šafárik University, Moyzesova 11, SK-04154 Košice (Slovakia)
2. Institute of Physics, Na Slovance 2, CZ-182 21 Praha 8 (Czech Republic)
3. Institute of Physics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, SK-04154 Košice (Slovakia)
4. Dresden High Magnetic Field Laboratory, Helmholtz-Zentrum Dresden-Rossendorf, D-01314 Dresden (Germany)

Violet crystals of ([Cu(pn){sub 2}]{sub 2}[Pt(CN){sub 4}])[Pt(CN){sub 4}]·2H{sub 2}O (1, pn=1,2-diaminopropane) and blue crystals of [Cu(pn)Pt(CN){sub 4}]{sub n}·nH{sub 2}O (2) were prepared under hydrothermal conditions and characterized using elemental analysis, IR and UV–vis spectroscopy and by X-ray crystal structure analysis. Different number of ν(C≡N) absorption bands of these two compounds reflects their different structures. An X-ray crystal structure analysis has shown that complex 1 is of ionic character and is formed from trinuclear [Cu(pn){sub 2}–Pt(CN){sub 4}–Cu(pn){sub 2}]{sup 2+} complex cation and discrete [Pt(CN){sub 4}]{sup 2–} anion together with two molecules of crystal water. On the other hand, complex 2 is of polymeric character and is formed by 2D networks of [Cu(pn)Pt(CN){sub 4}]{sub n} composition and completed by n molecules of crystal water. Magnetic measurements show the presence of a weak antiferromagnetic exchange interaction in complex 1 (Θ=–0.2 K), while the magnetic susceptibility of complex 2 is well described by the model of uniform S=1/2 spin chain with exchange interaction J/k{sub B}=–1.64 K. - Graphical abstract: Two complexes of different structural types from the system Cu(II) – 1,2–diaminopropane – [Pt(CN){sub 4}]{sup 2–} have been isolated. These were characterized by IR and UV–VIS spectroscopy, X–ray crystal structure analysis together with the magnetic measurements. On one hand ([Cu(pn){sub 2}]{sub 2}[Pt(CN){sub 4}])[Pt(CN){sub 4}]∙2H{sub 2}O is of ionic character and is formed from trinuclear complex cation and discrete anion together with two molecules of crystal water. On the other hand, [Cu(pn)Pt(CN){sub 4}]{sub n}∙nH{sub 2}O is of polymeric character and is formed by 2D networks of [Cu(pn)Pt(CN){sub 4}]{sub n} composition and completed by n molecules of crystal water. - Highlights: • Two complexes of different compositions from one system have been isolated. • First complex is of ionic character and second one is of polymeric character. • Polymeric complex described as a spin chain in contrast to its bilayer structure.

• OSTI ID: 22475595
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Vol. 225; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ANIONS
ANTIFERROMAGNETISM
CARBON NITRIDES
CATIONS
COPPER COMPOUNDS
CRYSTAL STRUCTURE
CRYSTALS
CYANIDES
HYDRATES
INFRARED SPECTRA
LAYERS
MAGNETIC SUSCEPTIBILITY
MOLECULES
PLATINUM COMPOUNDS
SPIN
ULTRAVIOLET SPECTRA
X-RAY DIFFRACTION