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    (61Ni) Nickel NMR Properties of 61Ni References Safety note
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(61Ni) Nickel NMR

61Nickel (61Ni) is a low sensitivity nucleus with a low natural abundance that yields somewhat broad lines even in symmetric environments and very broad lines for slightly larger complexes over a very wide chemical shift range. 61Ni is a spin 3/2 nucleus and is therefore quadrupolar. As a result, the signal width increases with asymmetry of the environment. The most common oxidation state of nickel salts is Ni(II). However, this oxidation state is paramagnetic in the square-planar form so cannot be observed on a high resolution NMR spectrometer but could be observed in principle for complexes that take on the pure diamagnetic tetrahedral form. 61Ni NMR is most commonly observed for Ni(0) and is usually used for the study of Ni(0) complexes. Each type of nickel compound has its characteristic chemical shift (fig. 1). One bond coupling constants to 31P of 400 to 470 Hz are observed and two bond couplings to 19F in Ni(PF3)4 are 28 Hz.

Fig. 1. Chemical shift ranges for nickel NMR

Chemical shifts of nickel

We do not have experience of 61Ni NMR in our laboratory but could provide the service if given an appropriate sample.

Properties of 61Ni

(Click here for explanation)

PropertyValue
Spin3/2
Natural abundance1.1399%
Chemical shift range1200 ppm, from -930 to 270
Frequency ratio (Ξ)8.936051%
Reference compoundNi(CO)4 80% in C6D6
Linewidth of reference7 Hz
T1 of reference0.05 s
Receptivity rel. to 1H at natural abundance4.09 × 10-5
Receptivity rel. to 1H when enriched0.0359
Receptivity rel. to 13C at natural abundance0.240
Receptivity rel. to 13C when enriched21.1
Linewidth parameter350 fm4

References

  • N. Hao, M. J. McGlinchey, B. G. Sayer and G. J. Schrobilgen, "A 61Ni NMR Study of Some d10 Nickel Complexes", J. Magn. Reson., 46, 158-162 (1982).

Safety note

Some of the materials mentioned here are very dangerous. Ask a qualified chemist for advice before handling them. Qualified chemists should check the relevant safety literature before handling or giving advice about unfamiliar substances. NMR solvents are toxic and most are flammable. Specifically, nickel salts are toxic and Ni(CO)4 is extremely toxic, work in a hood with appropriate gloves.