Refer to Fig. 14B.14 and use mathematical software, a spreadsheet, or the Living graphs on the web site of this book to draw a family of curves showing the variation of ³J_HH with ϕ for which A=+7.0Hz, B=−1.0Hz, and C varies slightly from a typical value of +5.0Hz. What is the effect of changing the value of the parameter C on the shape of the curve? In a similar fashion, explore the effect of the values of A and B on the shape of the curve.

Data in Fig. 14B.14

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Spin-spin coupling constant, J/Hz 2 12 HCCH 00 HNCH π/2 Angle, o R