Download citation
Download citation
link to html
The macrocyclic host 36,37,38-trimethoxy-5,10,15-trimethyl-22,25,30,33-tetraoxa-1,19-diazapentacyclo [17.8.8.13,7.18,12.113,17]octatriaconta-3,5,7(38),8,10,12(37),13,15, 17(36)-nonaene contains a somewhat flexible cavity lined with seven O atoms and two N atoms. The structures of three of its complexes are reported here: that with sodium thiocyanate, (I) {[Na(C38H52N2O7)] SCN}, at 296 K, and those with potassium thiocyanate, (II) {[K(C38H52N2O7)]SCN.H2O}, and caesium perchlorate, (III) {[Cs(C38H52N2O7)]ClO4·H2O}, at 156 K. The host adapts well to Cs+, with effective ninefold coordination; it adapts nearly as well to K+, but is not sufficiently flexible to be a good complexer for the much smaller Na+ ion. In structure (II) and in structure (III), a water molecule forms hydrogen bonds between an O atom of the host and an atom of the anion [N of SCN- in (II), O of ClO4- in (III)].

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks global, I, II, III

fcf

Structure factor file (CIF format)
Contains datablock crypkl

fcf

Structure factor file (CIF format)
Contains datablock crypcsl

hkl

Structure factor file (CIF format)
Contains datablock I

CCDC references: 129413; 129414; 129415

-1
Follow Acta Cryst. C
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds