Please use this identifier to cite or link to this item:
Title: Preparation and characterization of compounds between 18-crown-6 and two potassium mercurate(II) salts
Authors: Drew, M.G.B.
Lee, K.C.
Mok, K.F. 
Issue Date: 2-Jan-1989
Citation: Drew, M.G.B.,Lee, K.C.,Mok, K.F. (1989-01-02). Preparation and characterization of compounds between 18-crown-6 and two potassium mercurate(II) salts. Inorganica Chimica Acta 155 (1) : 39-43. ScholarBank@NUS Repository.
Abstract: Reaction between 1,4,7,10,13,16-hexaoxacyclooctadecane (18-crown-6) and dipotassium tetraiodomercurate(II) and dipotassium tetrathiocyanatomercurate(II) in organic solvent mixture produces [K(18-crown-6)]2[Hg2I6]·2H2O (1) and [Hg(18-crown-6)](SCN)2 (2) respectively. These two products have been isolated and characterized by elemental analysis and infrared studies. Their crystal structures have been determined. Crystal data for 1: a=10.644(9), b=14.925(13), c=15.362(14) Å, β=103.7(1)°, U=2371.0 Å3, space group P21/c, Z=2; for 12: a=8.224(7), b=8.027(7), c=15.56(1) Å, β= 103.0(1)°, U=1000.8 Å3, space group P21/c, Z=2. Reflection data were collected on a diffractometer and the structures were solved by the heavy atom technique and refined by full-matrix least-squares. For 1 1159 independent reflections above background were refined by full-matrix least-squares to R=0.070 (Rw=0.075) and for 2 913 independent reflections above background were similarly refined to R=0.077 (Rw=0.083). 1 contains [K2- (18-crown-6)2]2+ centrosymmetric dimeric cations in which two [K(18-crown-6)]+ cations are linked via weak KO bonds and centrosymmetric [Hg2I6]2- anions. 2 contains centrosymmetric discrete [Hg(18-crown-6)(SCN)2] molecules in which the mercury atom has an eight-coordinate hexagonal bipyramidal environment, being bonded to the sulphur atoms of two thiocyanate groups as well as to six oxygen atoms of the 18-crown-6. © 1989.
Source Title: Inorganica Chimica Acta
ISSN: 00201693
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

checked on Oct 14, 2021

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.