{2}-Metallocryptands of Iron and Gallium: Synthesis, Structure, and Properties [1]
Rolf W. Saalfranka, Uwe Reimanna, Andreas Scheurera, Frank Hampelb, Cornelia Goebelc, and Regine Herbst-Irmerc
aDepartment Chemie und Pharmazie, Lehrstuhl f¨ur Anorganische und Allgemeine Chemie, Universit¨at Erlangen-N¨urnberg, Egerlandstraße 1, 91058 Erlangen, Germany
bDepartment Chemie und Pharmazie, Organische Chemie, Universit¨at Erlangen-N¨urnberg, Henkestraße 42, 91054 Erlangen, Germany
cInstitut f¨ur Anorganische Chemie, Universit¨at G¨ottingen, Tammannstraße 4, 37077 G¨ottingen, Germany
Reprint requests to Prof. Dr. R. W. Saalfrank. Fax: (+49) 9131-85-27367.
E-mail: rolf.saalfrank@chemie.uni-erlangen.de
Z. Naturforsch.2009,64b,365 – 370; received January 13, 2009
Starting from CH-acidic tetradentate ligands H2L (1) and triethylamine, the synthesis and cha- racterisation of four dinuclear iron(III) and gallium(III) cryptands [M2(L)3] (3,4) are reported. The structures of the ligand H2L (1a) and the triple helicate3bwere determined by X-ray diffraction analysis. The ferric complexes3were further characterised by M¨ossbauer spectroscopy and cyclic voltammetry. NMR spectroscopy proved the diamagnetic gallium(III) cryptands4to remain stable in solution for several days.
Key words:N,O-Ligand, Metallocryptand, Triple Helicate, Self-assembly, Supramolecular Chemistry
