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'Tetrahedral Anions' in keywords
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1998 (2)
1Author    Insan Boy, Gerhard Cordier, Brigitte Eisenmann, Rüdiger KniepRequires cookie*
 Title    Oligomere Tetraeder-Anionen in Borophosphaten: Darstellung und Kristall­ strukturen von NaFe[BP20 7(0H )3] und K2 Fe2 [B2 P4 0 1 6 (0 H)2 ] Oligomeric Tetrahedral Anions in Borophosphates: Synthesis and Crystal Structures of NaFe[BP20 7(0 H )3] and K2Fe2[B2P40 16(0 H )2]  
 Abstract    Crystals of the title compounds were grown under hydrothermal conditions. The crystal structures were determined by single crystal data. NaFe[BP20 7(0 H)3] (monoclinic, C 2/c, a = 1042.0(2), b = 821.5(1), c = 921.7(1) pm, ß = 116.60(1)°, Z=4): The crystal structure contains isolated anions [BP20 7(0 H)3]4~, which correspond to trinuclear units P 0 l/20 3-B 0 2/ 2(0 H)2-P 0 1/ 20 2(0 H) of corner sharing tetrahedra. Fe3+ is coordinated octahedrally by oxygen, Na+ is 8 -fold coordinated by oxygen forming cubes. K2Fe2 [B2P40 16(0 H)2] (triclinic, P i, a = 516.7(1), b = 808.9(1), c = 834.0(1) pm, a = 87.06(f), ß = 80.21(1), 7 = 86.59(1)°, Z = 1): The crystal structure contains isolated anions [B2P40 16(0 H)2]8_. Four-membered rings of tetrahedra with two additional terminal phosphate groups are formed by condensation of two trinuclear units P 0 1/ 20 3-B 0 3/ 2(0 H)-P 0 2/ 20 2. Fe3+ is in an octahedral and K+ in an irregularly 10-fold coordination by oxygen. 
  Reference    Z. Naturforsch. 53b, 165—170 (1998); eingegangen am 13. Oktober 1997 
  Published    1998 
  Keywords    Boron, Tetrahedral Anions, Phosphorus 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0165.pdf 
 Identifier    ZNB-1998-53b-0165 
 Volume    53 
2Author    Insan Boy, G.Erhard Cordier, Rüdiger KniepRequires cookie*
 Title    Oligomere Tetraeder-Anionen in Borophosphaten: Sechserringe mit offenen und cyclischen Phosphat-Verzweigungen in der Kristallstruktur von K6Cu2[B4P80 28(OH)6] O ligom eric Tetrahedral A nions in Borophosphates: Six-M em bered Rings with Open and Cyclic Phosphate B ranchings in the Crystal Structure o f K6C u2[B4P80 28( 0 H )6]  
 Abstract    Crystals of K6Cu2[B4Ph02h(OH)6] were grown under hydrothermal conditions at 160 °C. The crystal structure (monochnic, P 2,/c (Nr. 14), a = 961.8(1), b = 1755.0(1), c = 942.0(1) pm, /3 = 112.29(1)°, Z = 2) contains oligomeric tetrahedral anions based on six-membered rings {B4P2 0 |()0 8/2} with additional branchings by hydrogenphosphate-groups (open branching: 4 x H P030 , /2; cyclic branching: 2 x HP0 20 2/ 2). The complex borophosphate anion is represented by the formula [B4P8O28(OH)6]l0_. Cu2+ is in a tetragonal pyramidal and K+ in an irregular coordination by eight and nine oxygen ligands, respectively. 
  Reference    Z. Naturforsch. 53b, 1440—1444 (1998); eingegangen am 23. Juli 1998 
  Published    1998 
  Keywords    Boron, Phosphorus, Tetrahedral Anions 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-1440.pdf 
 Identifier    ZNB-1998-53b-1440 
 Volume    53