Heteronuclear tickling

All this therefore appears gratifying—unfortunately heteronuclear tickling experiments definitely established a negative sign for 17(P-P) in P2F4.<1969,31) This therefore re-opens the question of a sound theoretical approach to such couplings and this problem remains exceptionally attractive. 

McFarlane ° on dimethylmercury illustrate the general features of heteronuclear tickling and show how coupling constants between two nuclei may be determined when neither is directly observed. The principles involved in this technique have already been described in detail in Volume 1 of this series. 

Heteronuclear tickling experiments on PhMe2PH have indicated that the sign of is positive. 

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