Two nickel(II) complexes exhibiting 'fused' 9-MC-3 and 12-MC-4 metallacrowns
| العنوان: | Two nickel(II) complexes exhibiting 'fused' 9-MC-3 and 12-MC-4 metallacrowns |
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| المؤلفون: | Haiquan Tian, Jianmin Dou, Dacheng Li, Yong-Fei Li, Hua Yang |
| المصدر: | Transition Metal Chemistry. 46:503-508 |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Metals and Alloys, chemistry.chemical_element, 010403 inorganic & nuclear chemistry, Oxime, 01 natural sciences, Antiferromagnetic coupling, 0104 chemical sciences, Catalysis, Inorganic Chemistry, Metal, chemistry.chemical_compound, Crystallography, Nickel, chemistry, visual_art, Materials Chemistry, Cluster (physics), visual_art.visual_art_medium, Metallacrown, Organometallic chemistry |
| الوصف: | The reactions of (E)-quinoline-2-carbaldehyde oxime (Hqcah) with Ni(ClO4)2·6H2O and NH4SCN and with Ni(CF3SO3)2 and NaN3 led to two solitary metallacrowns (MCs) ([Ni5(qcah)7(Hqcah)(CH3OH)(SCN)(OH)]·ClO4 (1) and [Ni4(qcah)4(N3)4(Py)4] (2), respectively. Complex 1 is a pentanuclear nickel cluster that exhibits two "fused" 9-MC-3 structural units with both rings possessing Ni2–N–O–Ni1–N–O–Ni5–O–N and Ni3–N–O–Ni4–O–Ni5–O–N connectivities. Complex 2 consists of four [Ni(qcah)(N3)(Py)] units with adjacent nickel atoms linked together through N–O groups to construct a tetranuclear 12-MC-4 metallacrown. The ligands exhibit μ3:η2:η1:η1, μ2:η2:η1 and μ1:η2 coordination modes in 1 and μ2:η2:η1 coordination mode in 2. Magnetic property measurements and the fitting of various temperature magnetic susceptibilities revealed antiferromagnetic coupling between metal centers with the negative coupling parameters in both 1 and 2. |
| تدمد: | 1572-901X 0340-4285 |
| DOI: | 10.1007/s11243-021-00468-2 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::732feaa3e20ac8603c553ef5c2f4dc5e https://doi.org/10.1007/s11243-021-00468-2 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........732feaa3e20ac8603c553ef5c2f4dc5e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1572901X 03404285 |
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| DOI: | 10.1007/s11243-021-00468-2 |