NMR STUDY OF THE TEMPERATURE DEPENDENCE OF PARAMAGNETIC CHEMICAL SHIFTS OF [Co(DTPA)](3-)

Temperature dependences of paramagnetic chemical shifts in complex [Co(DTPA)](3-) are studied by NMR. It is established that the maximal temperature sensitivity of chemical shifts d(delta(exp))/dT is 0.68 ppm/K. Taking into account the half-width of the signal (|CT|/W = 0.51 K-1), the NMR shifts of the studied complex show high temperature sensitivity in the series of complexes of paramagnetic d-block elements. Complex [Co(DTPA)](3-) can be considered as a promising compound for the design of temperature sensitive NMR probes to determine local temperature in aqueous environments and for advanced MRI diagnostics.