The synthesis and structural determination of the compound delta"-Au1-xCd2-x, (0.07 <= x <= 0.08) is reported. The structure may be formally derived from that of xi-CoZn13, but elemental ordering causes an incommensurate modulation as determined by single-crystal X-ray diffraction at room temperature. The compound delta"-Au3.23Cd5.76 crystallizes in the monoclinic super space group C2/m(0 beta 1/2)00 with lattice parameters a = 14.790(2) angstrom, b = 8.251(1) angstrom, c = 12.744(1) angstrom, beta = 115.182(9)degrees and a q-vector q = (0 beta 1/2), beta = 0.579b*. The delta ''-phase is stable up to 652(1) K.