... s - 7.00, m - 7.00, rn - 7.00, m - 7.00, m (a) All chemical shifts are reported in ppm downfield from internal TMS. All coupling constants are reported in cycles per second. (b) Solvent was deuteriochloroform. ... Page 6. 0 1 0 H. $1. (htta, TF Page, Jr., C. J. Riggle, and AA Manian Vol. 4 ...