Second-order rate constants for the reaction of [OCP⁻] with reference electrophile in acetonitrile at 20 °C.

Electrophile	k 2 (M−1 s−1)
1a	—a
1b	—a
1c	2.52 × 109
1d	2.18 × 109
1e	—
1f	1.04 × 108
1g	9.67 × 107
1h	2.23 × 108
1i	1.08 × 108
1j	1.77 × 107
1k	1.74 × 104
1l	2.98 × 102
1m	2.17 × 102
1n	3.71 × 101

^aVery fast reaction.