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1978 (1)
1977 (1)
1Author    Requires cookie*
 Title    Über die Tricyanatomercurate KHg(NCO)3 und RbHg(NCO)3 - Synthesen, Kristallstrukturen und Schwingungsspektren  
 Abstract    On th e Cyanatom ercurates K H g(N C O)3 and R bH g(N C O)3 -Syntheses, Crystal Structures and V ibrational Spectra G e r h a r d T h i e l e u n d P e t e r H i l f r i c h B y m ixing aqueous solutions of Hg(CH3COO)2 and KOCN the white precipitate K 2 Hg3(NCO)8 is formed. When recrystallised from CH3OH colorless crystals of the compound KHg(NCO)3 are obtained. The crystal structure analysis (space group Pnma; a — 1015.2(6) pm, b = 399.3(3) pm, c = 1772.9(9) pm) shows a distorted KCdCl3 arrange­ ment w ith isolated Hg(NCO)2 molecules, K+ and NCO~ ions. The vibrational spectra in the range of 250-3000 cm-1 are discussed. The rubidium compound is isotypous (a = 1019.0(6) pm, b = 411.6(4) pm, c = 1820.5(8) pm). 
  Reference    (Z. Naturforsch. 32b, 1239—1243 [1977]; eingegangen am 25. Juli 1977) 
  Published    1977 
  Keywords    Cyanatomercurate, Cyanato Complex, Crystal Structure, Vibrational Spectra 
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 TEI-XML for    default:Reihe_B/32/ZNB-1977-32b-1239.pdf 
 Identifier    ZNB-1977-32b-1239 
 Volume    32 
2Author    Gerhard Thiele, Peter HilfrichRequires cookie*
 Title    Über Cyanatomercurate M2Hg3(NCO)8 (M = K, Rb, Cs) - Synthesen, Kristallstrukturen und Schwingungsspektren On Cyanatomercurates M2Hg3(NCO)8 (M = K, Rb, Cs) - Syntheses, Crystal Structures and Vibrational Spectra  
 Abstract    By mixing aqueous solutions of Hg(CH3COO)2 and MOCN (M = K, Rb, Cs) the tri-clinic compounds M2Hg3(NCO)8 are formed. In a first approximation the crystal structure analysis indicates isolated Hg(NCO)2 molecules besides K+ and NCO~ ions. As in the range of van der Waals radii additional NCO-neighbours are noticed the mercury atoms are surrounded by distorted octahedra. The octahedra around 2/3 of the Hg form infinite chains as in KHg(NCO)3 which are linked together by additional Hg(NCO)2 molecules. Therefore the compound can be formulated as a double salt 2 KHg(NCO)3 • Hg(NCO)2. The vibrational spectrum is discussed. Rb2Hg3(NCO)8 is isotypous while the caesium salt has a double cell volume. 
  Reference    Z. Naturforsch. 33b, 597—602 (1978); eingegangen am 20. März 1978 
  Published    1978 
  Keywords    Cyanatomercurate, Cyanato Complexes, Crystal Structure, Vibrational Spectra 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0597.pdf 
 Identifier    ZNB-1978-33b-0597 
 Volume    33