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Transition Metal Chemistry

, Volume 43, Issue 2, pp 115–125 | Cite as

Syntheses, structures, and solid-state phosphorescence characteristics of trans-bis(salicylaldiminato)Pt(II) complexes bearing perpendicular N-aryl functionalities

  • Shotaro Iwata
  • Hidenori Takahashi
  • Asami Ihara
  • Kumiko Hiramatsu
  • Junya Adachi
  • Soichiro Kawamorita
  • Naruyoshi Komiya
  • Takeshi Naota
Article
  • 218 Downloads

Abstract

The syntheses, structures, and solid-state emission characteristics of trans-bis(salicylaldiminato)Pt(II) complexes bearing N-aromatic functionalities are described herein. A series of Pt complexes bearing various N-phenyl (1) and N-(1-naphthyl) (2) groups on the salicylaldiminato ligands were prepared by reacting PtCl2(CH3CN)2 with the corresponding N-salicylidene aromatic amines, and the trans-coordination and crystal packing of these complexes were unequivocally established based on X-ray diffraction (XRD). Complexes with 2,6-dimethylphenyl (1c), 2,6-diisopropylphenyl (1d), 1-naphthyl (2a), and 1-(2-methylnaphthyl) (2b) groups on the N atoms exhibited intense phosphorescent emission at ambient temperature in the crystalline state, while those with phenyl (1a), 2,6-dibromophenyl (1b), and 2,6-bis(N,N-dimethylamino)phenyl (1e) functionalities were either less emissive or non-emissive under the same conditions. XRD analyses identified significant intramolecular interactions between Pt and H atoms of the N-aryl functionalities in the emissive crystals of 1c, 1d, and 2a. These interactions were evidently an important factor associated with intense emission at ambient temperature.

Notes

Acknowledgements

This work was supported by JSPS KAKENHI Grant Numbers (JP15H03796 and JP16H06516).

Supplementary material

11243_2017_198_MOESM1_ESM.docx (118 kb)
Supplementary material 1 (DOCX 117 kb)

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2017

Authors and Affiliations

  1. 1.Department of Chemistry, Graduate School of Engineering ScienceOsaka UniversityMachikaneyama, Toyonaka, OsakaJapan
  2. 2.Chemistry LaboratoryThe Jikei University School of MedicineKokuryo, Chofu, TokyoJapan

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