Question

8. The following reactions occur: 6 7 8 Cp(CO}Mo-H 9 20°C, 1 hr Ph Postulate structures for 6-9 based on the data below. Complex ¹H NMR 3.44 (m, 4H) 3.96 (m,

4H) 5.26 (s, 5H) PO Hints: a. Complex 8 is cationic L 3.44 (m, 4H) 4.01 (m, 4H) 5.29 (s, 5H) 7.50 (m, 5H) 7.49 (m, 5H) -6.41 (d, J-65 Hz, 1H) 3.21 (m, 4H) 3.96 (m, 2H) H 4.64 (m, 2H) 6.00 (s, 5H) 7.42 (m, 1H) 7.70 (m, 5H) 3.38 (m, 4H) 4.41 (m, 4H) CsH6 Reflux 2 hr 5.06 (d, J-3 Hz, 5H) 5.72 (m, 1H) 7.48 (m, 5H) Cp(CO),Mo 9 L 20 °C, 1 hr NHPFo EtOH, H₂O 8 Selected IR data (cm²³) 3389 1945 1860 3355 1966 1880 3380-3400 1990 1900 3160 1800 b. Reaction of 6 with chloroform gives 7. c. N-H protons often appear as broad singlets which may be obscured by other proton resonances. d. All complexes are 18-electron species.

Fig: 1