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lilac ice May 9, 2024, 5:12 AM

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How is the circled group showing -I effect?
I know O is quite EN .
But O would already get a negative induced charge due to polarisatiom between P and O. So, won't its electron withdrawing tendency decrease?

abstract dirgeBOT May 9, 2024, 5:12 AM

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Note for OP

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tranquil gate May 9, 2024, 8:32 AM

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I believe it's a weak -I effect

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O is attached to phosphorus and sp2 hybridised carbon which are both less electronegative than it

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Hence most of the negative charge is pulled closer to oxygen

cedar obsidian May 10, 2024, 8:19 AM

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lilac ice How is the circled group showing -I effect? I know O is quite EN . But O would ...

its a weak acid. hence it cant show -R / -M effect. but quite possible it may show a weak -I effect because instead of 3 H there are only 2H attached to O , so its basicity might have decreased and acidity might have increased slightly

lilac ice May 10, 2024, 10:18 AM

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+solved @tranquil gate @cedar obsidian

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