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The title compound, dipotassium(+) bis[(1,4,7,10,13,16-hexaoxacyclooctadecane)potassium(+)] hexaselenodistannate(4-) tetrakis(ethylenediamine) solvate, K2[K(C12H24O6)]2[Sn2Se6].4C2H8N2, (1), has been prepared by the extraction of the alloy KSn0.67Se1.93 in en (en = ethylenediamine) in the presence of 18-crown-6 followed by addition of tetrahydrofuran. The geometric parameters observed for the Sn2Se64- anion in (1) are significantly different from those previously reported in the (enH+)2(2,2,2-crypt-K+)2 (2,2,2-crypt is 1,10-diazabicyclo- 4,7,13,16,21,24-hexaoxa[8.8.8]hexacosane), K+(NMe3+)3 and M+ (M = Na, K, Rb, Cs) salts.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablock ap9abs

fcf

Structure factor file (CIF format)
Contains datablock ap9_abs

CCDC reference: 128941

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