Heterobimetallic copper(I) complexes bearing both 1,1′-bis(diphenylphosphino)ferrocene and functionalized 3-(2′-pyridyl)-1,2,4-triazole

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

2 Scopus Citations
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Author(s)

  • Jing-Lin Chen
  • Xue-Hua Zeng
  • Paramaguru Ganesan
  • Li-Hua He
  • Jin-Sheng Liao
  • Sui-Jun Liu
  • He-Rui Wen
  • Feng Zhao

Detail(s)

Original languageEnglish
Pages (from-to)4261-4271
Journal / PublicationNew Journal of Chemistry
Volume43
Issue number10
Online published7 Feb 2019
Publication statusPublished - 14 Mar 2019
Externally publishedYes

Abstract

A new series of cationic and neutral heterobimetallic Cu(i) complexes bearing both 1,1′-bis(diphenylphosphino)ferrocene and functional 3-(2′-pyridyl)-1,2,4-triazole have been synthesized. They all show a highly distorted tetrahedral P2N2 geometry around Cu(I), in which functional 3-(2′-pyridyl)-1,2,4-triazole adopts either mono-anionic η2(N1,N2) or neutral η2(N1,N2) or η2(N1,N4) bonding mode, depending on the substituent and NH ↔ N conversion of 1,2,4-triazole. All these Cu(I) complexes are air-stable in both solution and solid states, and isomerization is only observed in solution for the cationic complex with a bulky tert-butyl group, as evidenced by 1H and 31P NMR studies. All these 1,2,4-triazole-based complexes show a relatively weak and broadened low-energy absorption band, attributed to the charge-transfer transitions, as suggested by time-dependent density functional theory (TDDFT) calculations, which is more influenced by the NH ↔ N conversion of 1,2,4-triazole relative to the variation of their substituents. Since the charge-transfer excited state is quenched by a photoinduced intramolecular energy transfer from the {Cu(N^N)(PP)} moiety to the ferrocene, as supported by the lowered oxidation potential of the ferrocene in comparison to the Cu(I) center, these dppf-based Cu(I) complexes all show no detectable emission in solution and solid states at room temperature and at 77 K.

Citation Format(s)

Heterobimetallic copper(I) complexes bearing both 1,1′-bis(diphenylphosphino)ferrocene and functionalized 3-(2′-pyridyl)-1,2,4-triazole. / Chen, Jing-Lin; Zeng, Xue-Hua; Ganesan, Paramaguru; He, Li-Hua; Liao, Jin-Sheng; Liu, Sui-Jun; Wen, He-Rui; Zhao, Feng; Chi, Yun.

In: New Journal of Chemistry, Vol. 43, No. 10, 14.03.2019, p. 4261-4271.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review