Solutions_Manual_for_Organic_Chemistry_6th_Ed 334

Solutions_Manual_for_Organic_Chemistry_6th_Ed 334 - 1 5-20...

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Unformatted text preview: 1 5-20 For a [4 + 4] cyc\oaddition: (a) HOMO H OMO* Thermal P hotochemical ( a nti bondi ng i n teraction ) b ondi ng interaction ( � a llowed ) 11: 3 o ne interaction is anti bonding � forbidden b oth interactions are bonding ( b) A [4 + 4 ] cycloaddition is not thermal ly al lowed, but a [4 + 2 ] (Diels-Alder) i s ! HOMO bonding '-interaction � J� i nteraction 11: 3 b onding LUMO 1 5 -2 1 A = EC l E= A c - l l = I cm x A = 0.50 c onvert mass to moles: 6 x 1 mg x 1 000 mL lL 1g 1 000 mg 1 m ole -- 1 60 g = 6 x 1 0--6 moles C= 1 0--6 moles I O mL 0.50 4 1 0- ) ( 1 ) x E= (6 X = 8 33 "" 8 = 4 6 x l 0-- M 3 27 ...
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