Jump to main content
Jump to site search

Issue 17, 2009
Previous Article Next Article

Manipulating the crystal packing of pyDTDA radical ligand coordination complexes with Mn(ii) and Ni(ii)

Author affiliations

Abstract

The synthesis of 4′-CN, 5′-CN and 5′-Br substituted pyDTDA neutral radical bidentate ligands is reported (pyDTDA = 4-(2′-pyridyl)-1,2,3,5-dithiadiazolyl). The Ni(hfac)2 and Mn(hfac)2 coordination complexes of both cyano substituted ligands, and the Mn(hfac)2 coordination complex of the bromo substituted ligand, have been prepared and the crystal packing of these is compared (hfac = 1,1,1,5,5,5-hexafluoroacetylacetonato-). Unlike the previously reported Mn(hfac)2(pyDTDA), the Mn(hfac)2(4′-CN-pyDTDA) complex does not form dimers in the solid-state making it possible to measure the magnetic coupling between the unpaired electrons on the coordinated Mn(II) ion and the unpaired electron on the radical ligand by SQUID magnetometry; J/kB = −74(1) K, using H = −2J{SMn·SRad} and gav. = 2.01.

Graphical abstract: Manipulating the crystal packing of pyDTDA radical ligand coordination complexes with Mn(ii) and Ni(ii)

Back to tab navigation

Supplementary files

Article information


Submitted
01 Oct 2008
Accepted
15 Jan 2009
First published
16 Mar 2009

Dalton Trans., 2009, 3193-3203
Article type
Paper

Manipulating the crystal packing of pyDTDA radical ligand coordination complexes with Mn(II) and Ni(II)

N. G. R. Hearns, R. Clérac, M. Jennings and K. E. Preuss, Dalton Trans., 2009, 3193
DOI: 10.1039/B817214E

Social activity

Search articles by author

Spotlight

Advertisements