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M. Boca, R.F. Jameson, W. Linert:
"Fascinating Variabilty in Chemistry and Properties of 2,6-bis-(benzimidazol-2-yl)-pyridine and 2,6-bis-(benzthiazol-2-yl)-pyridine and their Complexes";
Coordination Chemistry Reviews, 225 (2011), 290 - 317.

A review of papers up to 2008 dealing with all branches of chemistry of the compounds containing 2,2 -
pyridine-2,6-diylbis(1H-benzimidazole) and 2,2 -pyridine-2,6-diylbis(1,3-benzothiazole) is presented.
The review summarizes the preparation procedures and properties of free organic compounds, as well as
their different protonated and/or deprotonated forms. A summary of complex compounds of the considered
ligands is presented together with the review of the most important properties such as spectroscopic
properties, structures, magnetic properties or biological and electrochemical activity. From this review
the blind spots can be identified which might suggest more points of potential interest. Also missing is a
promising investigation of, at present unknown, analogues.

2,6-Bis-(benzimidazol-2-yl)-pyridine (bzimpy) 2,6-Bis-(benzthiazol-2-yl)-pyridine (bztpy) Complexes Magnetic properties Spin crossover Structure Spectra

http://dx.doi.org/10.1016/j.ccr.2010.09.010