The charge transfer salts (DT-TTF)2[Ni(dcdmp)2], (DT-TTF)3[Cu(dcdmp)2]2 and (DT-TTF)3[Au(dcdmp)2]2, (dcdmp=2,3-dicyano5,6-dimercaptopyrazine) were obtained by electrocrystallisation and characterized. The Ni compound presents a structure consisting of stacks of fully oxidized donor pairs alternating with dianionic complexes. In the two other compounds the complex is monoanionic, the Au salt presenting a structure with stacks of donors triads alternating with pairs of complexes. All compounds display a semiconductor behavior with the highest electrical conductivity of 6.8 S/cm at room temperature being observed for the Cu salt.
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Crystal data for (DT-TTF)2 [Ni(dcdmp)2] (1) at T=298 K: triclinic, space group P-1, Z=1, a=7.3828(10) Å, b=8.7828(17) Å, c=15.078(3) Å, α=91.874(14)º, β=102.432(12)º and γ=93.558(6)º (R1=0.09 and wR2=0.11). Crystal data for (DT-TTF)3 [Au(dcdmp)2]2, (2) at T=298 K: triclinic system, space group P-1, Z=1, a=10.1549(7) Å, b=12.8538(9) Å, c=15.4783(15) Å, α=111.996(6)º, β=93.390(6)º and γ=112.261(6)º (R1=0.04 and wR2=0.05).
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Belo, D., Lopes, E.B., Santos, I.C. et al. Synthesis and Characterization of Charge Transfer Salts Based on DT-TTF and M(dcdmp)2 Complexes. J Low Temp Phys 142, 353–358 (2006). https://doi.org/10.1007/s10909-006-9117-8
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DOI: https://doi.org/10.1007/s10909-006-9117-8