Fluorescent Heteroleptic Zirconium and Hafnium Complexes

Kuhlmann L, Methling R, Simon J, Neumann B, Stammler H-G, Strassert CA, Mitzel NW (2018)
ZEITSCHRIFT FUER ANORGANISCHE UND ALLGEMEINE CHEMIE 644(18): 1091-1095.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Five new heteroleptic zirconium and hafnium complexes were synthesized. The complexes carry chloro ligands as well as differently substituted phenoxy benzoxazole ligands [HL1 = 2-(2-hydroxyphenyl)benzoxazole, HL2 = 2-(2-hydroxynaphthyl)benzoxa-zole, HL3 = 2-(2-hydroxy-3,5-di-tert-butylphenyl)benzoxazole]. They were characterized by H-1 and C-13{H-1} NMR spectroscopy as well as by elemental analyses and X-ray diffraction experiments. The molecular structures in the crystals show distorted octahedral or capped trigonal prismatic coordination spheres. The intermolecular interactions influencing the packing patterns are mainly HCl contacts. For the hafnium complex [Cl2Hf(L3)(2)] a dynamic behavior in solution was examined using temperature dependent H-1 NMR spectroscopy. The photo-physical data show that in all cases fluorescence arises from a short-lived excited state, the emission maxima being located in the blue spectral region.
Stichworte
Zr-IV complex; Hf-IV complex; Zirconium; Hafnium; Phenoxy benzoxazole; Fluorescence
Erscheinungsjahr
2018
Zeitschriftentitel
ZEITSCHRIFT FUER ANORGANISCHE UND ALLGEMEINE CHEMIE
Band
644
Ausgabe
18
Seite(n)
1091-1095
ISSN
0044-2313
eISSN
1521-3749
Page URI
https://pub.uni-bielefeld.de/record/2931982

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Kuhlmann L, Methling R, Simon J, et al. Fluorescent Heteroleptic Zirconium and Hafnium Complexes. ZEITSCHRIFT FUER ANORGANISCHE UND ALLGEMEINE CHEMIE. 2018;644(18):1091-1095.
Kuhlmann, L., Methling, R., Simon, J., Neumann, B., Stammler, H. - G., Strassert, C. A., & Mitzel, N. W. (2018). Fluorescent Heteroleptic Zirconium and Hafnium Complexes. ZEITSCHRIFT FUER ANORGANISCHE UND ALLGEMEINE CHEMIE, 644(18), 1091-1095. doi:10.1002/zaac.201800312
Kuhlmann, L., Methling, R., Simon, J., Neumann, B., Stammler, H. - G., Strassert, C. A., and Mitzel, N. W. (2018). Fluorescent Heteroleptic Zirconium and Hafnium Complexes. ZEITSCHRIFT FUER ANORGANISCHE UND ALLGEMEINE CHEMIE 644, 1091-1095.
Kuhlmann, L., et al., 2018. Fluorescent Heteroleptic Zirconium and Hafnium Complexes. ZEITSCHRIFT FUER ANORGANISCHE UND ALLGEMEINE CHEMIE, 644(18), p 1091-1095.
L. Kuhlmann, et al., “Fluorescent Heteroleptic Zirconium and Hafnium Complexes”, ZEITSCHRIFT FUER ANORGANISCHE UND ALLGEMEINE CHEMIE, vol. 644, 2018, pp. 1091-1095.
Kuhlmann, L., Methling, R., Simon, J., Neumann, B., Stammler, H.-G., Strassert, C.A., Mitzel, N.W.: Fluorescent Heteroleptic Zirconium and Hafnium Complexes. ZEITSCHRIFT FUER ANORGANISCHE UND ALLGEMEINE CHEMIE. 644, 1091-1095 (2018).
Kuhlmann, Lisa, Methling, Rafael, Simon, Jasmin, Neumann, Beate, Stammler, Hans-Georg, Strassert, Cristian A., and Mitzel, Norbert W. “Fluorescent Heteroleptic Zirconium and Hafnium Complexes”. ZEITSCHRIFT FUER ANORGANISCHE UND ALLGEMEINE CHEMIE 644.18 (2018): 1091-1095.