... substituent 11 Aromatic Chemistry 12 6; borth0 meta para 24 25 positions 1, 2-, 1, 3- and 1, 4- are sometimes replaced by the terms ortho-, meta- and para- (abbreviated to 0-, m- and p-, respectively) ... dimethylbenzenes, u-, m- and p-xylene ( 2-4 ) are often used as a mixture in industrial solvents bMe Me o-xylene ( 1,2-dirnethylbenzene) Me rn-xylene ( I ,3-dimethylbenzene) Me p-xylene ( 1,4-dirnethylbenzene) ... CH3 OCH3 H -0 .71 -0 .16 +0.12 -0 .07 +0.11 0.00 -1 .00 -0 .66 -0 .37 -0 .17 -0 .27 0.00 F CI COCH3 CF3 CN NO2 +0.34 +0.37 +0.38 +0.43 +0.56 +0.71 +0.06 +0.23 +0.50 +0.54 +0.66 +0.78 Aromatic Substitution...