Synthesis and characterization by diffraction and 31P- and 77Se-NMR spectroscopy of [Mo33-Se)(μ2-Se2) 3(N(SePPh2)2)3]Br and [Mo33-Se)(μ2-Se2) 3(Se2P(OCH2CH3)2) 3]Br

Virginie Béreau, James A. Ibers

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

The new Mo/Se clusters [Mo33-Se)(μ2-Se2) 3(N(SePPh2)2)3]Br (1) and [Mo33-Se)(μ2-Se2) 3(Se2P(OCH2CH3)2) 3]Br (2) have been synthesized by the selective substitution of the bromo ligands in the starting material [PPh4]2[Mo33-Se)(μ 2-Se2)3Br6] with the selenoorgano bidentate ligands [N(SePPh2)2]- and [Se2P(OEt)2]-. The complexes have been characterized in solution by 31P- and 77Se-NMR spectroscopy and in the solid state by single crystal X-ray diffraction; the same cation structures are present both in solution and in the solid state. Crystallographic data for 1: [Mo33-Se)(μ2-Se2) 3(N(SePPh2)2)3]Br·3 CH2Cl2, C72H60BrMo3N3P6Se 13·3 CH2Cl2, trigonal, space group R3, a=21.299 (10) Å, c=38.433 (27) Å, V=15 100 (15) Å3, T=-120°C, Z=6; crystallographic data for 2: Mo33-Se)(μ2-Se2) 3(Se2P(OCH2CH3)2) 3]Br, C12H30BrMo3P3O3Se 13, monoclinic, space group P21/n, a=13.404 (2) Å, b=22.732 (4) Å, c=13.932 (3) Å, β=113.134 (3)°, V=3 903.7(12) Å3, T=-120°C, Z=4.

Original languageEnglish (US)
Pages (from-to)123-129
Number of pages7
JournalComptes Rendus de l'Academie des Sciences - Series IIc: Chemistry
Volume3
Issue number2
DOIs
StatePublished - Apr 1 2000

Keywords

  • Amine
  • Cluster de molybdène
  • Phosphate
  • Phosphine
  • RMN de Se
  • Sélénium

ASJC Scopus subject areas

  • Chemistry(all)

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