Go toArchive
Browse byFacets
Bookbag ( 0 )
'Hexanuclear Fe Se SR Complexes' in keywords
Results  1 Item
Sorted by   
Section
Publication Year
1987 (1)
1Author    Henry Strasdeit, Bernt Krebs, G. HenkelRequires cookie*
 Title    [Fe 6 Se 9 (SR) 2 ] 4 ' Clusters (R = Me, CH 2 Ph): Synthesis and Characterization, and the X-Ray Structure of (PhCH 2 NEt3)4[Fe 6 Se 9 (SMe)2]  
 Abstract    The compounds (PhCH 2 NEt 3) 4 [Fe 6 Se 9 (SMe) 2 ] (1) and (Et 4 N) 4 [Fe 6 Se 9 (SCH 2 Ph) 2 ] (2) have been isolated in good yields from Fe(SR) 3 (R = Me, CH 2 Ph)/"Na 2 Se 2 " reaction mixtures in methanol/N,N-dimethylformamide after addition of the appropriate tetraalkylammonium chlorides. 1 is monoclinic, space group P2]/c, Z = 4, with a = 18.697(14), b -22.606(16), c = 15.989(11) Ä, and/3 = 94.15(6)° at 140 K. Its structure has been refined to R (R w) -0.092 (0.075). The [Fe 6 Se 9 (SMe) 2 ] 4_ anion contains six coplanar iron atoms which are present in distorted tetrahedral Se 4 and Se 3 (SMe) ligand surroundings. The Se atoms are n, and fi 4 bridging. The four central Fe atoms and the Se atoms constitute a Fe 4 Se 9 group that is structurally related to 4[Fe 2 Se 3 ] 2_ double tetrahedral chains and 2 [FeSe] layers. The Fe atoms in the [Fe 6 Se 9 (SMe) 2 ] 4 ~ cluster are antiferromagnetically coupled. 1 has a room-temperature magnetic moment of 1.22 ,M B /Fe. Cyclic voltammograms, and electronic, infrared, and proton resonance spectra of 1 and 2 have been measured. 
  Reference    Z. Naturforsch. 42b, 565—572 (1987); received December 1 1986 
  Published    1987 
  Keywords    Hexanuclear Fe/Se/SR Complexes, Synthesis, X-Ray, Magnetic and Electrochemical Properties 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0565.pdf 
 Identifier    ZNB-1987-42b-0565 
 Volume    42