Pregled bibliografske jedinice broj: 116510
Magnetic and structural properties of [Ta_6Cl_12(CH_3OH)_6]Br_3 and [Ta_6Cl_12(CH_3OH)_6]Br_3· ; ; 4H_2O
Magnetic and structural properties of [Ta_6Cl_12(CH_3OH)_6]Br_3 and [Ta_6Cl_12(CH_3OH)_6]Br_3· ; ; 4H_2O // Book of abstarcts and programme / Cetina, Mario ; Kajfež, Tanja ; Popović, Stanko ; Štefanić, Zoran (ur.).
Zagreb: Hrvatska akademija znanosti i umjetnosti, Hrvatsko kristalografsko društvo, 2003. (poster, međunarodna recenzija, sažetak, znanstveni)
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Naslov
Magnetic and structural properties of [Ta_6Cl_12(CH_3OH)_6]Br_3 and [Ta_6Cl_12(CH_3OH)_6]Br_3· ; ; 4H_2O
Autori
Perić, Berislav ; Miljak, Marko ; Brničević, Nevenka
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Book of abstarcts and programme
/ Cetina, Mario ; Kajfež, Tanja ; Popović, Stanko ; Štefanić, Zoran - Zagreb : Hrvatska akademija znanosti i umjetnosti, Hrvatsko kristalografsko društvo, 2003
Skup
Twelfth croatian-slovenian crystallographic meeting
Mjesto i datum
NP Plitvička jezera, Hrvatska, 19.06.2003. - 23.06.2003
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
x
Sažetak
In most magnetic molecular clusters studied in the literature, localized moments of metal ions are coupled by superexchange interactions via ligand entities which are parts of molecular clusters. There is a limited number of studies where magnetic behaviour arises from unfilled molecular orbitals delocalized over the entire metal cores of molecular metal clusters [J. Sinzing et al., Phys. Rev. Lett. 81 (1998) 3211]. This type of magnetism is present in compounds with paramagnetic hexanuclear tantalum halide clusters. Temperature dependent magnetic susceptibility measurements for the compound [Ta_6Cl_12(CH_3OH)_6]Br_3 (I) and temperature dependent magnetic susceptibility anisotropy measurements for the compound [Ta_6Cl_12(CH_3OH)_6]Br_3· ; ; 4H_2O (II) can be interpreted as Bonner-Fisher one-dimensional model of interacting magnetic centres [J. C. Bonner, M. E. Fisher, Phys. Rev. A, 135 (1964) 640]. Structural data for compounds (I) and (II) are available from the literature [N. Brničević et al., Inorg. Chem. 31 (1992) 3294]. Compound (I) crystallizes in space group, a = b = 19.127 (4) Å ; ; , c = 8.565 (1) Å ; ; , and compound (II) in C2/m space group, a = 12.187 (14) Å ; ; , b = 15.793 (4) Å ; ; , c = 9.182 (6) Å ; ; , β = 99.05 (3)o. Magnetic measurements will be discussed in view of the structural data with special attention to the crystallographic origin of anisotropy for compound (II).
Izvorni jezik
Engleski
Znanstvena područja
Kemija
