Table 2. Experimental Cotton Effects Observed for Bromo[2.2]paracyclophanes 1–2^a.

	1		p-2		m′-2		o′-2
band	λ/nm	Δε/M–1 cm–1	λ/nm	Δε/M–1 cm–1	λ/nm	Δε/M–1 cm–1	λ/nm	Δε/M–1 cm–1
A	322	+0.1	321	+0.6	316	+1.1	316	+0.6
B	290b	–2.4	290b	–4.8	290b	–3.3	290b	–1.9
C	261	–16.8	267	–23.7	265b	–28.7	262	–25.3
	250b	–15.5	250b	–15.7	256	–31.0	255b	–24.1
D	221	+24.3	228	+36.7	238	+14.4	238	+21.5
	215b	+19.3	215b	+17.2	222	+18.0	222	+15.0
E	202	–26.7	203	–20.6	205	–33.3	205	–43.6

^aIn acetonitrile at 25 °C.

^bShoulder.