Acta Crystallographica Section C

Crystal Structure Communications

Volume 62, Part 7 (July 2006)

metal-organic compounds

gz3011 scheme

Acta Cryst. (2006). C62, m275-m277 [ doi:10.1107/S0108270106016507 ]

(Borohydrido)(18-crown-6)potassium and (borohydrido)(dibenzo-18-crown-6)(tetrahydrofuran)potassium

C. Villiers, P. Thuéry and M. Ephritikhine

Abstract: In the two compounds (borohydrido)(1,4,7,10,13,16-hexaoxacyclooctadecane- [kappa] ⁶O)potassium, [K(BH₄)(C₁₂H₂₄O₆)], (I), and (borohydrido)(1,4,7,10,13,16-hexaoxa-2,3:11,12-dibenzocyclooctadeca-2,11-diene- [kappa] ⁶O)(tetrahydrofuran)potassium, [K(BH₄)(C₄H₈O)(C₂₀H₂₄O₆)], (II), the K atom is bound to the six O atoms of the crown ether and to a tridentate borohydride group, with further coordination to a tetrahydrofuran molecule in (II). The alkali metal ion environment is thus distorted hexagonal-pyramidal in (I) and bipyramidal in (II).

Formula: [K(BH₄)(C₁₂H₂₄O₆)] and [K(BH₄)(C₄H₈O)(C₂₀H₂₄O₆)]


	Structure factor file (CIF format) (161.4 kbytes) [ doi:10.1107/S0108270106016507/gz3011Isup2.hkl ] Contains datablock I

	Structure factor file (CIF format) (232.1 kbytes) [ doi:10.1107/S0108270106016507/gz3011IIsup3.hkl ] Contains datablock II

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