Issue 44, 2013

8-Quinolinolate complexes of yttrium and ytterbium: molecular arrangement and fragmentation under laser impact

Abstract

New 8-quinolinolate (Q) complexes of yttrium (1) and ytterbium (2) were synthesized by the reactions of Cp3Y and Yb[N(SiMe3)2]3 with 3 equiv. of 8-hydroxyquinoline in a DME solution. Single crystal X-ray analysis revealed the trinuclear molecular structure of the compounds Ln3Q9. The LDI-TOFMS investigation displayed that under the laser impact the compounds split off Q anions to give Ln3Q8+, Ln2Q5+ and LnQ3+ moieties. In the negative mode spectra the anions Q and LnQ4 were observed. The DFT calculations showed the decreased stability of cationic Ln-quinolinolate as compared with their anionic counterparts. Complex 2 which is used as an emitter in a three-layer OLED displayed a metal-centered emission at 979 nm and an intensity of 50 μW cm−2 at 15.5 V.

Graphical abstract: 8-Quinolinolate complexes of yttrium and ytterbium: molecular arrangement and fragmentation under laser impact

Supplementary files

Article information

Article type
Paper
Submitted
26 Jun 2013
Accepted
03 Sep 2013
First published
03 Sep 2013

Dalton Trans., 2013,42, 15699-15705

8-Quinolinolate complexes of yttrium and ytterbium: molecular arrangement and fragmentation under laser impact

E. V. Baranov, G. K. Fukin, T. V. Balashova, A. P. Pushkarev, I. D. Grishin and M. N. Bochkarev, Dalton Trans., 2013, 42, 15699 DOI: 10.1039/C3DT51706C

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