Synthesis and Crystal Structure of Mixed-valence Hexanuclear Manganase Oxide Complex, Hexakis(mu(2)-pivalato)-tetrakis(mu(3)-pivalato)-mono(pyridine)-tris(pivalic acid)-bis(mu(4)-oxo)dimanganese(III) tetramanganase(II)


SARI M. , POYRAZ M., BÜYÜKGÜNGÖR O.

JOURNAL OF CHEMICAL CRYSTALLOGRAPHY, cilt.39, sa.8, ss.549-552, 2009 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 39 Konu: 8
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1007/s10870-009-9527-y
  • Dergi Adı: JOURNAL OF CHEMICAL CRYSTALLOGRAPHY
  • Sayfa Sayıları: ss.549-552

Özet

The complex, [Mn6O2(OOCCMe3)(10)(HOO-CCMe3)(3)(py)], has a hexanuclear structure with a Mn6O2 core. This complex crystallizes in the monoclinic space group P2(1)/n with a = 17.757(5) angstrom, b = 27.413(5) angstrom, c = 22.348(5) angstrom, beta = 90.233(5)degrees, V = 9,040(4) angstrom(3) and Z = 4. It contains a [Mn6O2](10+) core that can be described as two edge-sharing Mn-4 tetrahedra at the centre of each of which tetrahedron lies a mu(4)-O2- ion. All Mn atoms are six-coordinate and possess distorted octahedral geometry. Mn-4 exhibits butterfly arrangement with both mu(4)-O atoms on the same side of the molecule. The complex is mixed-valence ((Mn4Mn2III)-Mn-II), and the Mn-III centers are assigned as the two central metal ions bridged by two O2- ions.