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1Author    YalcinE. Lerm Ana+, MehmetK. Abaka, Ingrid Svobodab, H. Artm Ut Fuessb-, KlausG. Riesarc, WolfgangH. AasecRequires cookie*
 Title    X-Ray Structure and Magnetic Properties of the Tetracupferronato-bis(//-methoxy)-diiron(III) Complex  
 Abstract    The tetracupferronato-bis(w-methoxy)-diiron(III) complex has been synthesized in aceto­ nitrile and its crystal structure determined. C i6H->6N80 1(>Fe2, monoclinic, space group C2/c, a =18.425(3), b = 12.999(2), c = 15.046(3) A, ß = 12 4 .6 6 (2)°,> = 2964(1) A , Z = 4, wR(2) = 0.097 from 1491 reflections (F2). Two iron(III) atoms are at special positions in six-fold co­ ordination, bridged by O with a F e -O -F e angle of 102.4(1)° and a distance between two iron(III) centers of 3.075(1) A. Temperature-dependent magnetic susceptibility measure­ ments reveal a antiferromagnetic exchange interaction (J = -1 4 cm -1) betw een the iron(III) centers. 
  Reference    Z. Naturforsch. 50b, 1587—1590 (1995); received January 11 1995 
  Published    1995 
  Keywords    X -Ray, Magnetic Properties, Antiferromagnetic Coupling 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1587.pdf 
 Identifier    ZNB-1995-50b-1587 
 Volume    50 
2Author    Z. NaturforschRequires cookie*
 Title    Structure and Magnetic Properties of a Dinuclear Complex with Iron(III) in Octahedral and Pyramidal Coordination  
 Abstract    [FeL(M eO H)C l]2 (L = N-(2-hydroxyphenyl)salicylaldimine) was synthesized and its crystal structure determ ined, [C27H 20N 2O5Cl2Fe2], monoclinic, space group P 2 a/c, a = 9.528(1), b = 7.684(1), c = 18.365(2) Ä , ß = 109.83(1)°, V = 1264.8 Ä 3, Z = 2. Two identical [FeL(M eOH)Cl] fragments, related by an inversion centre, are combined by the two bridging O atoms, to form a binuclear unit. The iron(III) centers are separated by 3.163(2) A and weakly antiferro-magnetically coupled (J = -8 .0 (1) cm -1), which follows from temperature -dependent mag­ netic susceptibility m easurements in the range 4.2 to 288 K. The effective magnetic moment per iron(III) is /ueff = 7.4 /uB at 288 K. 
  Reference    Z. Naturforsch. 49b, 1239—1242 (1994); received March 28 1994 
  Published    1994 
  Keywords    Dinuclear Iron(III) Complex, X-Ray, Structure, Magnetic Properties, Antiferromagnetic Coupling 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-1239.pdf 
 Identifier    ZNB-1994-49b-1239 
 Volume    49 
3Author    Ayhan Elmalia, Yalcin Elerman3, Ingrid Svoboda, Hartmut Fuessb, Klaus Griesar0, Wolfgang HaasecRequires cookie*
 Title    Structure and Spin-Spin Interactions in a Linear Trinuclear Ni(II) Complex  
 Abstract    [Ni3(C2H302)2(C3H8N0)2L2] 1(L=N,N'-1,3-propyl-disalicylaldimine), (C2H30 2)=acetate, (C3H><NO)=hydroxymethyl-dimethylamine] has been synthesized and its crystal structure de­ termined, [C44H54N6OioNi3], triclinic, space group Pi, a = 9.560(1), b = 10.681(1), c = 12.200(1) A ,a = 112.17(1), ß = 101.25(1), 7 = 90.32(1)°, V = 1127.3 A \ Z = l.The molecule is linearly trinuclear with octahedral coordination of each nickel ion. The Ni-Ni distance is 3.048(1) A. Each nickel(II) atom is in an octahedral coordination. Magnetic susceptibility mea­ surements in the range 4.2 < T < 280 K have revealed antiferromagnetic coupling between adjacent Ni atoms (J\ = -2.2 cm-1) and between the terminal Ni atoms (/2 = -1 .7 cm-1). 
  Reference    Z. Naturforsch. 51b, 665—670 (1996); received October 20 1994 
  Published    1996 
  Keywords    X-Ray, Linear Trinuclear Nickel Complex, Magnetic Properties, Antiferromagnetic Coupling 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0665.pdf 
 Identifier    ZNB-1996-51b-0665 
 Volume    51 
4Author    Ayhan Elmali3, Yalcin Elermana, Ingrid Svobodab, Hartmut Fuessb, Klaus Griesar0, Wolfgang HaasecRequires cookie*
 Title    Structure and Magnetic Properties of a Dinuclear Copper(II) Complex  
 Abstract    [Cu2L] (L=N-2-hydroxy-4-methylphenyl-4-oxo-2-pentalketimine) was synthesized and its crystal structure determined. C24H?6Cu2N204 monoclinic space group P2|/n with a= 10.978(2), 17.045(3), c= 11.958(2) Ä, ß = 101.89(1)°, V = 2189.6(7) A3,Z = 4. Two copper(II) atoms in a distorted square-planar coordination are bridged by two oxygen atoms to form a dinuclear unit. The copperfll) centers are separated by 3.025(1) A and antiferro-magnetically coupled (7=-222.3 cm), which follows from temperature-dependent magnetic susceptibility measurements in the range 4.2 to 300 K. 
  Reference    Z. Naturforsch. 52b, 157—161 (1997); received September 30 1996 
  Published    1997 
  Keywords    Dinuclear Cu(II) Complex, X-Ray, Structure, Magnetic Properties, Antiferromagnetic Coupling 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0157.pdf 
 Identifier    ZNB-1997-52b-0157 
 Volume    52 
5Author    Manas Kumar Sahaa, Sutapa Sena, Parimal Kundu+, Tarakranjan Guptaa, Volker Gramlichb, Samiran Mitraa>Requires cookie*
 Title    Structure and Magnetic Properties of an Oxalic Acid Bridged Dinuclear Copper(II) Complex  
 Abstract    [LCu{ji-(0 H)2(C20 2)}CuL](C1 0 4)2, (HL = N,N-dimethyl N-propylsalicylald-imine) was synthesised and its crystal structure was determined. C26H36CI2CU2N4O 14, triclinic space group 
  Reference    Z. Naturforsch. 53b, 1281—1284 (1998); received April 29 1998 
  Published    1998 
  Keywords    Oxalic Acid Bridge, Dimeric Complex, X-Ray Data, Antiferromagnetic Coupling 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-1281.pdf 
 Identifier    ZNB-1998-53b-1281 
 Volume    53