Abstract: Five new supramolecular compounds containing strontium–cucurbituril complexes are synthesized: [{Sr(H2O)5}2(CB[6])]Cl4·2NH4Cl·5H2O (1), [{Sr(H2O)3Cl}3(CB[6])2]Cl3·10H2O (2), [{Sr2(H2O)10}{Sr(H2O)4Cl}2(CB[6])2]Cl6·18H2O (3), [{Sr2(H2O)9}{Sr(H2O)4Cl}2(CB[6])2]Cl6·18H2O (4), [Sr(H2O)4(dmf)(CB[6])][Sr(H2O)3(dmf)(CB[6])(H2btc)](btc)·18H2O (5). According to single crystal X-ray diffraction data, the strontium atom adopts coordination number 8 in all compounds. The crystal structures of 1-4 compounds contain cationic polymeric chains in which cucurbituril molecules alternate with mono- and/or dinuclear strontium aqua complexes. Compound 5 contains two types of cationic strontium–cucurbit[6]uril complexes: [Sr(H2O)3(dmf)(CB[6])(H2btc)]+ and [Sr(H2O)4(dmf)(CB[6])]2+. They alternate in a checkerboard fashion to form slightly corrugated layers. A noteworthy feature of the structure of 5 is that the coordinated DMF molecule is located in the inner cavity of the macrocyclic cavitand. Compounds 1-5 are characterized by single crystal X-ray diffraction, IR spectroscopy, and the elemental analysis.

Cite: Andrienko I.V. , Samsonenko D.G. , Kovalenko E.A.
Supramolecular Sr(II) Complexes with Cucurbituril
Journal of Structural Chemistry. 2026. V.67. N9. P.1934-1943. DOI: 10.1134/s0022476626090052 WOS Scopus

Original: Андриенко И.В. , Самсоненко Д.Г. , Коваленко Е.А.
Супрамолекулярные комплексы Sr(II) с кукурбитурилом
Журнал структурной химии. 2026. Т.67. №9. 171217 :1-10. DOI: 10.26902/jsc_id171217 OpenAlex

Dates:

Submitted:	Apr 21, 2026
Accepted:	Jun 25, 2026
Published online:	Sep 30, 2026

Identifiers:

≡ Web of science:	WOS:001893350200013
≡ Scopus:	2-s2.0-105052265633

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