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Coordination chemistry of alkali and alkaline earth cations. X-ray structural analysis of bis (benzo-15-crown-5) potassium nitrate monohydrate

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Abstract

The 1:2 charge separated KNO3 complex with benzo-15-crown-5 (B15C5) has been crystallized from a 50% water-methanol solution. K(B15C5)2NO3·H2O is monoclinic,P21/c,a=12.717(2),b=19.569(2),c=13.025(3) Å, β=100.79(1)o,Z=4,D c =1.37 g·cm−3. The X-ray structure was refined toR=0.052 for 3049 independent reflections withF 20 ≥2.0σ(F 20 ), collected with MoK α radiation for a 2 θ-range of 4–44°. The K+ ion is coordinated tenfold in a crown sandwich through all five oxygen atoms of the macrocyclic ligand. Nitrate and water oxygens are not involved in the cation coordination sphere.

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Authors and Affiliations

  1. Fachbereich Chemie der Universität Kaiserslautern, Erwin-Schrödinger-Straße, D-6750, Kaiserslautern, Germany

    W. S. Sheldrick

  2. Chemistry Department, University of Indore, 452001, Indore, India

    N. S. Poonia

Authors
  1. W. S. Sheldrick
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  2. N. S. Poonia
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Additional information

Supplementary Data relating to this article are deposited with the British Library as Supplementary Publication No. SUP 82031 (6 pages).

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Sheldrick, W.S., Poonia, N.S. Coordination chemistry of alkali and alkaline earth cations. X-ray structural analysis of bis (benzo-15-crown-5) potassium nitrate monohydrate. Journal of Inclusion Phenomena 4, 93–98 (1986). https://doi.org/10.1007/BF00662086

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