Unusual Fluxional and T1 Properties for +: a Polyhydride with Classical and Nonclassical Tautomers

Article abstract of DOI:10.1039/c39900000189

NMR studies show that BF4 exists as a tautomeric mixture (ΔH 1.1 kcal mol^-1) (1 cal = 4.184 J) of the classical tetrahydride 1(min., 250 MHz) 80 ms> (3a) (major) and the nonclassical d⁴ tautomer 1(min., 250 MHz) 8 ms for the (H2) peak> (3b) ⁺ (minor), the HD analogue of which has J_H,D 34 Hz; the fluxional processes in the system lead to an unusual temperature dependence of the T₁ values.

Full text of DOI:10.1039/c39900000189

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