Donor Slab Robustness and Band Filling Variations in BDT-TTP-based Molecular Conductors: β-(BDT-TTP)6[Re6S6Cl8]·(CH2Cl-CHCl2)2 and β-(BDT-TTP)6 [Mo6Cl14]·(CH2Cl-CHCl2)2

Two new phases for the metallic salts based on 2,5-bis(1,3-dithiol-2-ylidene)-1,3,4,6-tetrathiapentalene have been prepared and shown to exhibit metallic conductivity down to low temperature. The organic slab topology and band structure are identical to previously determined 2:1 salts of the same donor with smaller monoanions—only the Fermi surface (see Figure) is modified by changing the anion volume and charge.