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Crystal Structures of Two Solvates of (18-crown-6)potassium Acetate

Crystal Structures of Two Solvates of (18-crown-6)potassium Acetate

Phil Liebing, Ahmad Zaeni, Falk Olbrich, Frank T Edelmann

Acta Crystallogr E Crystallogr Commun. 2016 Nov 8;72(Pt 12):1757-1761.

PMID: 27980824

Abstract:

The crystal and mol-ecular strutures of two solvated forms of [K(18c6)]OAc (18c6 = 18-crown-6 = 1,4,7,10,13,16-hexa-oxa-cyclo-octa-decane and OAc = acetate) were determined by single-crystal X-ray diffraction, namely (acetato-κ2O,O')(1,4,7,10,13,16-hexa-oxa-cyclo-octa-decane-κ6O)potassium dihydrate, [K(CH3COO)(C12H24O6)]·2H2O (1) and (acetato-κ2O,O')aqua-(1,4,7,10,13,16-hexa-oxa-cyclo-octa-decane-κ6O)potassium acetic acid monosolvate [K(CH3COO)(C12H24O6)(H2O)]·CH3COOH (2). In both compounds, the acetate anion is bonded to the potassium ion in a chelating fashion and the metal atom is consequently slightly displaced from the O6 plane of the crown ether. In the crystals, O-H⋯O hydrogen bonds lead to a polymeric ladder structure in the dihydrate 1, while the acetic acid hydrate 2 features inversion dimers.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP127082-B	Potassium acetate		127-08-2	Price
LS7931301	2,6-Difluoropyridine-3-boronic acid hydrate			Price

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