Question 24 of 28 Map A Sapling Learning cymantrene, (n5-c5H5)Mn(co)3, was previ

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Question 24 of 28 Map A Sapling Learning cymantrene, (n5-c5H5)Mn(co)3, was previously used as an "anti-ping" additive to gasoline. Shown below are the two co stretches in the IR spectrum of cymantrene along with the two analogous CO stretches of (75-c5Mes)Mn(co) the permethylated analogue of cymantrene. Tyco VCO 1939 cm 1 1928 cm-1 (no-C5Me5 Mn (Co 3 2017 cm Based on this IR data, choose the correct answer to complete the following sentence: is a better donor because the stretching frequencies indicate electron density is being donated to the empty IT orbital on CO and thus the bond order of CO. O IC5H5T higher more decreases O [C5Me5] lower more/ decreases O 5H5] higher less increases O 5Mes] higher less increases o Previous Give Up & View So Check Answer o Next Ext Hint

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ANSWER:

C5H5- IS a better donar ,because the higher stretching frequency indicate less electron density is being donated to the empty PI* orbital on CO and thus increase the bond order of CO

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