Select the correct order of \( \mathrm{C}-\mathrm{O} \) bond order in mixed phosphine carbonyl c...
Select the correct order of \( \mathrm{C}-\mathrm{O} \) bond order in mixed phosphine carbonyl complex:
(a) \( \left[\left(\mathrm{Ph}_{3} \mathrm{P}\right)_{3} \mathrm{Mo}(\mathrm{CO})_{3}\right]\left[\left(\mathrm{Ph}_{2} \mathrm{PCl}\right)_{3} \mathrm{Mo}(\mathrm{CO})_{3}\right](\mathrm{Ph} \) \( \left.\left.\mathrm{PCl}_{2}\right)_{3} \mathrm{Mo}(\mathrm{CO})_{3}\right] \)
(b) \( \left[\left(\mathrm{Ph}_{3} \mathrm{P}\right)_{3} \mathrm{Mo}(\mathrm{CO})_{3}\right]\left[\left(\mathrm{Ph}_{2} \mathrm{PCl}\right)_{3} \mathrm{Mo}(\mathrm{CO})_{3}\right](\mathrm{Ph} \) \( \left.\left.\mathrm{PCl}_{2}\right)_{3} \mathrm{Mo}(\mathrm{CO})_{3}\right] \)
(c) \( \left[\left(\mathrm{Ph}_{3} \mathrm{P}\right)_{3} \mathrm{Mo}(\mathrm{CO})_{3}\right]=\left[\left(\mathrm{Ph}_{2} \mathrm{PCl}\right)_{3} \mathrm{Mo}(\mathrm{CO})_{3}\right](\mathrm{Ph} \) \( \left.\mathrm{PCl}_{2}\right)_{3} \mathrm{Mo}(\mathrm{CO})_{3} \) ]
(d) \( \left[\left(\mathrm{Ph}_{3} \mathrm{P}\right)_{3} \mathrm{Mo}(\mathrm{CO})_{3}\right]\left[\left(\mathrm{Ph}_{2} \mathrm{PCl}\right)_{3} \mathrm{Mo}(\mathrm{CO})_{3}\right](\mathrm{Ph} \) \( \left.\left.\mathrm{PCl}_{2}\right)_{3} \mathrm{Mo}(\mathrm{CO})_{3}\right] \)
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