Abstract
The asymmetric unit of the title compound, [K(C3H3N2)(C12H24O6)], is composed of a potassium cation bonded to the six O atoms of a crown ether molecule and the two N atoms of a pyrazolate anion. The K⋯O distances range from 2.8416 (8) to 3.0025 (8) Å, and the two K⋯N distances are 2.7441 (11) and 2.7654 (11) Å. The K cation is displaced by 0.8437 (4) Å from the best plane through the six O atoms. The latter plane is almost perpendicular to the plane of the pyrazolate ring [dihedral angle 83.93 (3)°].
Highlights
The asymmetric unit of the title compound, [K(C3H3N2)(C12H24O6)], is composed of a potassium cation bonded to the six O atoms of a crown ether molecule and the two N atoms of a pyrazolate anion
Comment We report here the X-ray crystal structure analysis of the potassium pyrazolide as complex with 18-crown-6, [K(18crown-6)(C3H3N2)] or [K(18-crown-6)(pz)]
We have found that irradiation of Mn(C5H3)(Bpz3)2(THF)2 (I) in the presence of 18-crown-6 leads to the formation of potassium pyrazolide (II)
Summary
Key indicators: single-crystal X-ray study; T = 173 K; mean (C–C) = 0.002 A; R factor = 0.026; wR factor = 0.066; data-to-parameter ratio = 16.5. The asymmetric unit of the title compound, [K(C3H3N2)(C12H24O6)], is composed of a potassium cation bonded to the six O atoms of a crown ether molecule and the two N atoms of a pyrazolate anion. The K cation is displaced by 0.8437 (4) Afrom the best plane through the six O atoms. The latter plane is almost perpendicular to the plane of the pyrazolate ring [dihedral angle 83.93 (3)]. Crystal data [K(C3H3N2)(C12H24O6)] Mr = 370.49 Monoclinic, P21=n a = 11.5330 (6) Ab = 8.2369 (5) Ac = 20.7622 (10) A = 101.612 (4)
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