Abstract
The carbamide complexes of lanthanide polyiodoiodates [Tm(ur)7][I3]3·2I2, [Yb(ur)6][I3]3 and [Lu(ur)6][I3]3 [ur is O=C(NH2)2] have been synthesized and structurally characterized. The structure-forming role of the pentaiodide ions taking part in the formation of extended channels 10–12 Å in diameter with incorporated hepta(carbamide)thulium cations combined to one another into infinite columns due to H-bonding, or the triiodide ions forming lace-like net with isolated hexa(carbamide)ytterbium(iii) or hexa(carbamide) lutetium(iii) cations located in the net holes has been revealed.
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