We present a study of the organic alloys [(TMTSF)(1-x)(TMTTF)(x)]2ReO4
. They exhibit an enhanced charge localization and a strong decrease o
f the (1/2,1/2,1/2) anion ordering (AO) transition temperature. Contra
ry to the (TMTDTSF)(2)ReO4 salt, this behavior does not interpolate th
at of the x=0 and x=1 pure compounds. It is ascribed to the presence o
f a 4k(F) site charge density wave due to the alternate order of the o
rganic molecules, which weakened the 2k(F) bond response function of t
he one-dimensional electron gas.