10. A recent report describes the reaction of C₂B4H8 with Fe(CO)s at 240°C. Two products were isolated via low-temperature distillation on a vacuum line. Product A condensed at -23°C, while product B passed -23°C and condensed at -45°C. Given the following data, suggest possible structures for A and B. 1. Deep, orange liquid A:

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10. A recent report describes the reaction of C₂B4H8 with Fe(CO)s at 240°C. Two products
were isolated via low-temperature distillation on a vacuum line. Product A condensed at -23°C,
while product B passed -23°C and condensed at -45°C. Given the following data, suggest
possible structures for A and B.
1. Deep, orange liquid
2. Mass spectrum shows the highest m/e peak at 214; other intense peaks are at m/e 186,
158, and 130.
3.¹¹B nmr shows 3 doublets, with relative intensities of 1:2:1.
4. 'H nmr shows 1 singlet of area 2, and 3 quartets of areas 1:2:1.
5. IR shows vibrations at 3090, 2590, 2076, and 2017 cm³¹.
A:
Transcribed Image Text:10. A recent report describes the reaction of C₂B4H8 with Fe(CO)s at 240°C. Two products were isolated via low-temperature distillation on a vacuum line. Product A condensed at -23°C, while product B passed -23°C and condensed at -45°C. Given the following data, suggest possible structures for A and B. 1. Deep, orange liquid 2. Mass spectrum shows the highest m/e peak at 214; other intense peaks are at m/e 186, 158, and 130. 3.¹¹B nmr shows 3 doublets, with relative intensities of 1:2:1. 4. 'H nmr shows 1 singlet of area 2, and 3 quartets of areas 1:2:1. 5. IR shows vibrations at 3090, 2590, 2076, and 2017 cm³¹. A:
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