|
Title
|
|
|
|
CFA-18 : a homochiral metal-organic framework (MOF) constructed from rigid enantiopure bistriazolate linker molecules
| |
|
Author
|
|
|
|
| |
|
Abstract
|
|
|
|
| In this work, we introduce the first enantiopure bistriazolate-based metal-organic framework, CFA-18 (Coordination Framework Augsburg-18), built from the R-enantiomer of 7,7,7',7'-tetramethyl-6,6',7,7'-tetrahydro-3H,3'H-5,5'-spirobi[indeno[5,6-d]-[1,2,3]triazole] (H-2-spirta). The enantiopurity and absolute configuration of the new linker were confirmed by several chiroselective methods. Reacting H-2-spirta in hot N,N-dimethylformamide (DMF) with manganese(ii) chloride gave CFA-18 as colorless crystals. The crystal structure with the composition [Mn2Cl2(spirta)(DMF)(2)] was solved using synchrotron single-crystal X-ray diffraction. CFA-18 shows a framework topology that is closely related to previously reported metal-azolate framework (MAF) structures in which the octahedrally coordinated manganese(ii) ions are triazolate moieties, and the chloride anions form crosslinked one-dimensional helical chains, giving rise to hexagonal channels. In contrast to MAFs crystallizing in the centrosymmetric space group R3, the handedness of the helices found in CFA-18 is strictly uniform, leading to a homochiral framework that crystallizes in the trigonal crystal system within the chiral space group P3(1)21 (no. 152). |
| |
|
Language
|
|
|
|
English
| |
|
Source (journal)
|
|
|
|
Dalton Transactions : an international journal of inorganic chemistry / Royal Society of Chemistry [London] - Cambridge, 2003, currens
Journal of the Chemical Society : Dalton transactions. - London, 1972 - 1999
| |
|
Publication
|
|
|
|
Cambridge
:
Royal Society of Chemistry
,
2020
| |
|
ISSN
|
|
|
|
1477-9226
[print]
1477-9234
[online]
| |
|
DOI
|
|
|
|
10.1039/D0DT02847A
| |
|
Volume/pages
|
|
|
|
49
:44
(2020)
, p. 15758-15768
| |
|
ISI
|
|
|
|
000590136500020
| |
|
Pubmed ID
|
|
|
|
33146189
| |
|
Full text (Publisher's DOI)
|
|
|
|
| |
|