Tris(ethylenediamine) cobalt(II) and manganese(II) nitrates
| hal.structure.identifier | Centre de Recherche Paul Pascal [CRPP] | |
| dc.contributor.author | CORTIJO, Miguel | |
| hal.structure.identifier | Centre de Recherche Paul Pascal [CRPP] | |
| dc.contributor.author | VALENTÍN-PÉREZ, Ángela | |
| hal.structure.identifier | Centre de Recherche Paul Pascal [CRPP] | |
| dc.contributor.author | ROUZIERES, Mathieu | |
| hal.structure.identifier | Centre de Recherche Paul Pascal [CRPP] | |
| dc.contributor.author | CLÉRAC, Rodolphe | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | ROSA, Patrick | |
| hal.structure.identifier | Centre de Recherche Paul Pascal [CRPP] | |
| dc.contributor.author | HILLARD, Elizabeth | |
| dc.date.issued | 2020-06 | |
| dc.identifier.issn | 2073-4352 | |
| dc.description.abstractEn | Octahedral tris(ethylenediamine) coordination complexes demonstrate helicoidal chirality, due to the arrangement of the ligands around the metal core. The enantiomers of the nitrate salts [Ni(en)3](NO3)2 and [Zn(en)3](NO3)2 spontaneously resolve to form a mixture of conglomerate crystals, which present a reversible phase transition from space group P6322 to enantiomorphic P6522 or P6122, with the latter depending on the handedness of the enantiomer. We report here the synthesis and characterization of [Mn(en)3](NO3)2 and [Co(en)3](NO3)2, which are isostructural to the Zn(II) and Ni(II) derivatives. The Mn(II) analogue undergoes the same phase transition centered at 150(2) K, as determined by single-crystal X-ray diffraction, Raman spectroscopy, and differential scanning calorimetry. The Co(II) derivative does not demonstrate a phase transition down to 2 K, as evidenced by powder X-ray diffraction and heat capacity measurements. The phase transition does not impact the magnetic properties of the Ni(II) and Mn(II) analogues; these high spin compounds display Curie behavior that is consistent with S = 1 and 5/2, respectively, down to 20 K, while the temperature-dependent magnetic moment for the Co(II) compound reveals a significant orbital contribution. | |
| dc.language.iso | en | |
| dc.publisher | MDPI | |
| dc.subject.en | phase transition | |
| dc.subject.en | coordination complexes | |
| dc.subject.en | enantiomorphic space groups | |
| dc.subject.en | X-ray crystallography | |
| dc.subject.en | chirality | |
| dc.subject.en | conglomerate crystallization | |
| dc.title.en | Tris(ethylenediamine) cobalt(II) and manganese(II) nitrates | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.3390/cryst10060472 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Crystals | |
| bordeaux.page | 472 (14 p.) | |
| bordeaux.volume | 10 | |
| bordeaux.issue | 6 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-02868896 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-02868896v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Crystals&rft.date=2020-06&rft.volume=10&rft.issue=6&rft.spage=472%20(14%20p.)&rft.epage=472%20(14%20p.)&rft.eissn=2073-4352&rft.issn=2073-4352&rft.au=CORTIJO,%20Miguel&VALENT%C3%8DN-P%C3%89REZ,%20%C3%81ngela&ROUZIERES,%20Mathieu&CL%C3%89RAC,%20Rodolphe&ROSA,%20Patrick&rft.genre=article |
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