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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Angew Chem Int Ed Engl. 2009;48(19):3491–3493. doi: 10.1002/anie.200900214

Table 2.

Frequencies of the C6H7+ ion as a function of counterion (in cm−1).

Counterion ν(CH2)
(average)		 ν(CH)aromatic ν(CC) +
δ(CCH)
none[a] 2810, 2795 (2803) 3110, 3080
CB11H6Cl6−[b] 2770, 2720 (2745) 3100, 3072, 3040, 3028 1601
B12Cl122− 2753, 2713 (2733) 3092, 3070, 3035 1600
CB11H6Br6−[b] 2757, 2714 (2736) 3095, 3073, 3066, 3023 1600
B12Br122− 2664 3084, 3060, 3028, 3015 1597
[a]

Ref. [14].

[b]

Ref. [13].