Issue 28, 2015

Vanadium[ethyl tricyanoethylene carboxylate]x: a new organic-based magnet

Abstract

We present the synthesis of a new high Curie temperature (Tc ∼ 145 K) organic-based magnet with composition V[ETCEC]1.3·0.3 CH2Cl2 formed by the reaction of ethyl tricyanoethylenecarboxylate (ETCEC) with V(CO)6 in CH2Cl2. Analysis of the IR spectrum indicates that all nitrile and carbonyl oxygen are coordinated to V(II) sites. Temperature-, field-, and frequency-dependent measurements of the magnetization reveal complex magnetic behavior with a magnetic transition into a more disordered state. Application of the random anisotropy model (RMA) shows that this disordered state is different from the correlated spin glass (CSG) phase observed in analogous organic-based magnets V[MeTCEC]x and V[TCNE]x synthesized in CH2Cl2. This suggests that V[ETCEC]x is less disordered than its analogues, which can be attributed to the slower reaction rate. This result provides a new partner to MeTCEC and TCNE based materials for the exploration of all-organic magnetic heterostructures.

Graphical abstract: Vanadium[ethyl tricyanoethylene carboxylate]x: a new organic-based magnet

Supplementary files

Article information

Article type
Paper
Submitted
11 May 2015
Accepted
17 Jun 2015
First published
18 Jun 2015

J. Mater. Chem. C, 2015,3, 7363-7369

Vanadium[ethyl tricyanoethylene carboxylate]x: a new organic-based magnet

Y. Lu, H. Yu, M. Harberts, A. J. Epstein and E. Johnston-Halperin, J. Mater. Chem. C, 2015, 3, 7363 DOI: 10.1039/C5TC01330E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements