التفاصيل البيبلوغرافية
| العنوان: |
Luminescent Zn(NCS)2 and Cd(NCS)2 coordination compounds with pyridine derivatives: Synthesis, structures and physical properties. |
| المؤلفون: |
Neumann, Tristan1, Jess, Inke1, dos Santos Cunha, Cesar1, Terraschke, Huayna1, Näther, Christian1 cnaether@ac.uni-kiel.de |
| المصدر: |
Inorganica Chimica Acta. Jun2018, Vol. 478, p15-24. 10p. |
| مصطلحات موضوعية: |
*LUMINESCENCE, *COORDINATION compounds, *CHEMICAL synthesis, *PYRIDINE derivatives, *CHEMICAL structure, *CHEMICAL reactions, *LIGANDS (Chemistry) |
| مستخلص: |
Reaction of Cd(NCS) 2 and Zn(NCS) 2 with the co-ligands 4-benzylpyridine or 4-benzoylpyridine leads to the formation of eight new compounds, of which one crystallizes in two polymorphic modifications. The co-ligand rich compounds with the composition M(NCS) 2 (L) 4 (M = Cd, Zn and L = 4-benzylpyridine or 4-benzoylpyridine) ( 1 ) form discrete complexes, in which the metal cations are each coordinated by four co-ligands and two N -bonded anionic ligands within slightly distorted octahedra. In the co-ligand deficient compounds ( 2 ) with the composition M(NCS) 2 (L) 2 two structure types are observed. The Zn compounds form discrete complexes in which the Zn cations are tetrahedral coordinated ( 2-Zn ), whereas in the Cd compounds ( 2-Cd ) the metal cations are octahedral coordinated and linked into chains by pairs of µ-1,3-bridging thiocyanate anions. Upon heating, compounds 1 loose half of the co-ligands and transform into compounds 2 . The coordination mode of the anionic ligands was also investigated by IR and Raman spectroscopy. All compounds show blue-green ligand-based luminescence with emission maxima varying between 21,857 cm −1 and 18,264 cm −1 . [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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