A tetranuclear mu(3)-alkoxo-bridged cubane-like copper(II) complex containing 2-(ethylamino)ethanol and acetate: Synthesis and structural characterization

YILMAZ V. T., Kars V., Kazak C.

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, cilt.633, sa.2, ss.351-353, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 633 Sayı: 2
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1002/zaac.200600300
  • Dergi Adı: ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.351-353
  • Anahtar Kelimeler: copper, tetranuclear copper complex, alkoxo bridge, 2-(ethylamino)ethanol, MAGNETIC CHARACTERIZATION, DICUBANE TYPE, LIGANDS, CLUSTER, SALTS, BASE
  • Karadeniz Teknik Üniversitesi Adresli: Hayır

Özet

A tetranuclear cubane-like complex, [Cu-4(mu-Etae)(4)(OAC)(4)](H2O)-H-. (1), with 2-(ethylamino)ethanol (EtaeH) and acetate (OAc)(-) ligands has been synthesized and characterized by elemental analysis, IR spectroscopy, and single crystal X-ray diffraction. Complex 1 crystallizes in the orthorhombic space group Pccn and consists of a tetranuclear [Cu4O4](4+) cubane core in which four copper(II) ions are bridged by mu(3)-alkoxide oxygen atoms of the Etae(-) anion. The amine N atom of Etae(-), and one of the O atom OAc also coordinate to the copper(II) ions forming a distorted square-pyramidal geometry with a CuO4N chromophore. The (CuCu)-Cu-... separations with in the [Cu4O4]4(+) cubanerange from 2.905(2) to 3.377(2) angstrom, and these short Cu-Cu separations are responsible for the anti-ferromagnetic coupling between the copper centers. The cubane-like units are linked by N-(HO)-O-... hydrogen bonds into one-dimensional supramolecular chains, which are further arranged in a two-dimensional array by van der Waal's interactions.