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1994 (1)
1982 (1)
1Author    Michael Gomolla, G.Ernot Gottschalk, H. Ans-C, Hristoph LüttgauRequires cookie*
 Title    Electromechanical Coupling II. The Effect of Perchlorate Upon Excitation-Contraction Coupling in Frog Skeletal Muscle Fibres  
 Abstract    In single skeletal muscle Fibres perchlorate causes a large shift o f the potential dependence o f contraction activation to more negative potentials w ithout a corresponding alteration in the kinet­ ics o f the inactivation process. 
  Reference    Z. Naturforsch. 37c, 707—708 (1982); received January 18/M arch 16 1982 
  Published    1982 
  Keywords    Perchlorate, Excitation-Contraction C oupling, Skeletal M uscle, Frog 
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 TEI-XML for    default:Reihe_C/37/ZNC-1982-37c-0707.pdf 
 Identifier    ZNC-1982-37c-0707 
 Volume    37 
2Author    H. Arald Hillebrecht, G.Erhard Thiele, Alrik Koppenhöfer, Heinrich VahrenkampRequires cookie*
 Title    Kristallstruktur und Schwingungsspektren von Zn(NH 3)4(C104)2 Crystal Structure and Vibrational Spectra of Zn(N H 3)4(C104)2  
 Abstract    The title compound Z n (N H 3)4(C104)2 crystallizes in the space group F 43m with a = 10.240(1) A. The crystal structure consists of tetrahedral Z n (N H 3)4 cations and two non­ equivalent C 104 anions with crystallographic Td symmetry. The complex ions constitute an arrangement which is known from the Zintl phase M gAgAs. The Z n(N H 3)4 cations are ccp packed with perchlorate anions in octahedral and tetrahedral voids. W hereas the C 104 ions centered at tetrahedral holes do not interact with the other lattice components, the perchlo­ rate ions in the octahedral voids are connected with the ammine ligands by a hydrogen bonded three-dimensional network involving all their N, H, and O atoms. The repeating unit of this network is a N40 4(m-H)12 cube with N -H = 1.19(2)A and O -H = 1.98(2)A . Raman and IR spectra were recorded between 150 and 4000 cm -1. A ll the expected internal m odes of the com plex ions could be detected and assigned. The crystallographically different C 104 anions have nearly the same vibrational spectra, only a slight splitting o f two IR m odes is observed. 
  Reference    Z. Naturforsch. 49b, 1163—1168 (1994); eingegangen am 25. März 1994 
  Published    1994 
  Keywords    Zinc Am m ine, Perchlorate, Cubic Structure, Hydrogen Bonds, Vibrational Spectra 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-1163.pdf 
 Identifier    ZNB-1994-49b-1163 
 Volume    49