Outerly functionalized and non-functionalized boron clusters intercalated into layered hydroxides with different modes of binding: materials for superacid storage

Melánová, Klára; Holub, Josef; Hynek, Jan; Fanfrlík, Jindřich; Beneš, L.; Kutálek, P.; Krejčová, A.; Hnyk, Drahomír; Zima, Vítězslav

doi:https://dx.doi.org/10.1039/C8DT02251H

Number of the records: 1

Outerly functionalized and non-functionalized boron clusters intercalated into layered hydroxides with different modes of binding: materials for superacid storage

1.

SYSNO ASEP	0492890
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Outerly functionalized and non-functionalized boron clusters intercalated into layered hydroxides with different modes of binding: materials for superacid storage
Author(s)	Melánová, Klára (UMCH-V)_{RID, ORCID} Holub, Josef (UACH-T)_{SAI, RID, ORCID} Hynek, Jan (UACH-T)_{SAI, RID, ORCID} Fanfrlík, Jindřich (UOCHB-X)_{RID, ORCID} Beneš, L. (CZ) Kutálek, P. (CZ) Krejčová, A. (CZ) Hnyk, Drahomír (UACH-T)_{SAI, RID, ORCID} Zima, Vítězslav (UMCH-V)_{RID, ORCID}
Source Title	Dalton Transactions. - : Royal Society of Chemistry - ISSN 1477-9226 Roč. 47, č. 33 (2018), s. 11669-11679
Number of pages	11 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	boranes ; carboranes ; intercalation
Subject RIV	CD - Macromolecular Chemistry
OECD category	Polymer science
Subject RIV - cooperation	Institute of Inorganic Chemistry - Inorganic Chemistry Institute of Organic Chemistry and Biochemistry - Physical ; Theoretical Chemistry
R&D Projects	GA17-10639S GA ČR - Czech Science Foundation (CSF)
	GA17-08045S GA ČR - Czech Science Foundation (CSF)
Institutional support	UMCH-V - RVO:61389013 ; UACH-T - RVO:61388980 ; UOCHB-X - RVO:61388963
UT WOS	000442509700040
EID SCOPUS	85051949285
DOI	10.1039/C8DT02251H
Annotation	Two binary boron hydrides (NH4)2B10H10 and Na2B12H12 and mono- and dicarboxy p- and m-carboranes (namely, 1-(COOH)-closo-1,7-C2B10H11, 1,12-(COOH)2-closo-1,12-C2B10H10 and 1,7-(COOH)2-closo-1,7-C2B10H10) were intercalated into ZnAl-layered double hydroxides (ZnAl-LDH) and into Zn5(OH)8(NO3)2·2H2O. The formed compounds were characterized using elemental analysis, thermogravimetry analysis, X-ray powder diffraction, infrared spectroscopy and solid state NMR. All the intercalated boron compounds are present in the interlayer space of the layered hosts as anions. It is presumed that in the case of B10H102−, B12H122− and 1,12-(COO)2-closo-1,12-C2B10H102−, the guest molecules form a monolayer, whereas in the case of 1-(COO)-closo-1,7-C2B10H111− and 1,7-(COO)2-closo-1,7-C2B10H102− a bilayer arrangement is more probable. In the case of 1,7-(COO)2-closo-1,7-C2B10H102−, the guest molecules are strongly interdigitated resulting in lowering of the interlayer distance. Two different modes of binding were found. Whereas the carboxylate derivatives of p- and m-carboranes are bonded through classical hydrogen bonds, the corresponding parent borane anions interact with the host structures by mainly dihydrogen bonding. In effect, both kinds of hydrogen bonding are mainly of an electrostatic nature. The dihydrogen bond is detected, e.g. in crystal engineering, and represents a driving force for interactions of boranes with biomolecules. Since the latter dicarboxylic acids were found to be superacids, their interactions with the host structures should be stronger than in the case of the benzoic and terephthalic acid intercalates.
Workplace	Institute of Macromolecular Chemistry
Contact	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Year of Publishing	2019

Number of the records: 1