|
|
|
|
|
| ID:
734281.0,
MPI für bioanorganische Chemie / MPI für bioanorganische Chemie |
| An Octanuclear Metallosupramolecular Cage Designed To Exhibit Spin-Crossover Behavior |
| Authors: | Struch, Niklas; Bannwarth, Christoph; Ronson, Tanya K.; Lorenz, Yvonne; Mienert, Bernd; Wagner, Norbert; Engeser, Marianne; Bill, Eckhard; Puttreddy, Rakesh; Rissanen, Kari; Beck, Johannes; Grimme, Stefan; Nitschke, Jonathan R.; Luetzen, Aarne | | Language: | English | | Date of Publication (YYYY-MM-DD): | 2017 | | Title of Journal: | Angewandte Chemie-International Edition | | Journal Abbrev.: | Angew.Chem. Int. Ed. | | Volume: | 56 | | Issue / Number: | 18 | | Start Page: | 4930 | | End Page: | 4935 | | Review Status: | Internal review | | Audience: | Experts Only | | Abstract / Description: | By employing the subcomponent self-assembly approach utilizing 5,10,15,20-tetrakis(4-aminophenyl)porphyrin or its zinc(II) complex, 1H-4-imidazolecarbaldehyde, and either zinc(II) or iron(II) salts, we were able to prepare O-symmetric cages having a confined volume of ca. 1300 angstrom(3). The use of iron(II) salts yielded coordination cages in the high-spin state at room temperature, manifesting spin-crossover in solution at low temperatures, whereas corresponding zinc(II) salts led to the corresponding diamagnetic analogues. The new cages were characterized by synchrotron X-ray crystallography, high-resolution mass spectrometry, and NMR, Mossbauer, IR, and UV/Vis spectroscopy. The cage structures and UV/Vis spectra were independently confirmed by state-of-the-art DFT calculations. A remarkably high-spin-stabilizing effect through encapsulation of C-70 was observed. The spin-transition temperature T-1/2 is lowered by 20 K in the host-guest complex. | | Comment of the Author/Creator: | Date: 2017, APR 24 2017 | | External Publication Status: | published | | Document Type: | Article | | Version Comment: | Automatic journal name synchronization |
| Communicated by: | N. N. | | Affiliations: | MPI für bioanorganische Chemie
| | Identifiers: | ISI:000399384700003 [ID No:1]
ISSN:1433-7851 [ID No:2]
DOI:10.1002/anie.201700832 [ID No:3] | |
|
|
|
The scope and number of records on eDoc is subject
to the collection policies defined by each institute
- see "info" button in the collection browse view.
|
|
Advanced