CRYSTAL-GROWTH AND STRUCTURE OF COSO4-CENTER-DOT-PYRAZINE-CENTER-DOT-6H2O(I) AND (COSO4)2-CENTER-DOT-PYRAZINE-CENTER-DOT-12H2O(II)

被引:20
|
作者
FETZER, T
JOOSS, R
LENTZ, A
DEBAERDEMAEKER, T
机构
[1] UNIV ULM,ANORGAN CHEM ABT,ALBERT EINSTEIN ALLEE 11,D-89069 ULM,GERMANY
[2] BASF AG,AMMONIAKLAB,KATALYSE ABT,ULM,GERMANY
[3] UNIV ULM,SEKT RONTGEN & ELEKTRONENBEUGUNG,W-7900 ULM,GERMANY
来源
关键词
COBALT COMPLEXES; PYRAZINE; GEL CRYSTALLIZATION; STRUCTURE;
D O I
10.1002/zaac.19946201015
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Single crystals of mu-pyrazino-bis[pentaquacobalt(II)]-sulfate-dihydrate CoSO4(pz).6H2O and Tetraqua-mu-pyrazino-cobalt(II)sulfate-dihydrate (CoSO4)2(pz) . 12H2O were grown by using gel methods and investigated by X-ray analysis. CoSO4(pz) . 6H2O (I) shows monoclinic symmetry, space group C2/c; a = 1006.4(4) pm, b = 1026.9(4) pm, c = 1261.5(2) pm; beta = 104.01(4)-degrees; Z = 4. (CoSO4)2(pz) . 12H2O (II) shows orthorhombic symmetry, space group Pbam; a = 1262.3(4) pm, b = 1231.3(4) pm, c = 684.1(2) pm; Z = 2. CoSO4 and Pyrazine crystalline in a polymeric (I) as well as in a dimeric (II) compound. In the polymeric compound the molecules are bonded by pyrazine to form alternating linear chains. The dimer is a dinuclear complex with a bridging pyrazine molecule.
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页码:1750 / 1754
页数:5
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