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Oligomere Tetraeder-Anionen in Borophosphaten: Sechserringe mit offenen und cyclischen Phosphat-Verzweigungen in der Kristallstruktur von K6Cu2[B4P8O28(OH)6] / Oligomeric Tetrahedral Anions in Borophosphates: Six-Membered Rings with Open and Cyclic Phosphate Branchings in the Crystal Structure of K6Cu2[B4P8O28(OH)6]

  • Insan Boy , Gerhard Cordier and Rüdiger Kniep

Abstract

Crystals of K6Cu2[B4PhO28(OH)6] were grown under hydrothermal conditions at 160 °C. The crystal structure (monochnic, P21/c (Nr. 14), a = 961.8(1), b = 1755.0(1), c = 942.0(1) pm, β = 112.29(1)°, Z = 2) contains oligomeric tetrahedral anions based on six-membered rings {B4P2O10O8/2} with additional branchings by hydrogenphosphate-groups (open branching: 4 x HPO3O1/2; cyclic branching: 2 x HPO2O2/2). The complex borophosphate anion is represented by the formula [B4P8O28(OH)6]10-. Cu2+ is in a tetragonal pyramidal and K+ in an irregular coordination by eight and nine oxygen ligands, respectively.

Received: 1998-7-23
Published Online: 2014-6-2
Published in Print: 1998-12-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

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