Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 23, Issue 66, Pages 16819-16828Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201703285
Keywords
isomerization; macropolyhedral boranes; photocrystallography; solid-state reactions; supramolecular chemistry
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Funding
- Russian Science Foundation [17-13-01442]
- Ministry of Education and Science of the Russian Federation [RFMERFI61917X0007]
- Russian Science Foundation [17-13-01442] Funding Source: Russian Science Foundation
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A series of salts and complexes containing trans- and iso-isomers of octadecahydro-eicosaborate [B20H18](2-) dianion is synthesized and characterized using FTIR and B-11 NMR spectroscopies and X-ray diffraction techniques. Both isomers are found to act as four-, bi-, or zero-dentate ligands in reactions with copper(II), silver(I), and lead(II) through apical and/or equatorial boron atoms. Solid-state photo- and thermoinitiated reactions of octadecahydro-eicosaborate isomerization and solvent cleavage occurring in these compounds in a single-crystal-to-single-crystal manner are studied in situ. In contrast with solutions, in solids the reaction of boron cluster transformation occurs rarely, thus, analysis of crystal packing allowed us to suggest some criteria of isomerization of macropolyhedral boranes in crystals. X-ray diffraction data are used to confirm reaction path of isomerization of the [B20H18](2-) dianion.
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