Crystal structure of catena-[(bis(O,O′-diethyl dithiophosphato-S,S′)-μ₂-1,2-bis(4-pyridylmethylene)hydrazine-N,N′)cadmium(II)], {C₂₀H₃₀CdN₄O₄P₂S₄}_n

Abstract

C20H30CdN4O4P2S4, triclinic, P1̄ (no. 2), a = 9.3353(2) Å, b = 9.7725(2) Å, c = 10.6884(2) Å, α = 63.153(2)°, β = 64.193(2)°, γ = 62.710(2)°, V = 740.43(3) Å3, Z = 1, Rgt(F) = 0.0171, wRref(F2) = 0.0465, T = 100 K.

Crystal structure of catena-poly[(μ2-1,2-bis(3-pyridylmethylene)hydrazine-κ2 N:N′)-bis(O,O′-dimethyl dithiophosphato-κ2-S,S′)cadmium(II)], {C16H22CdN4O4P2S4}n

“…As seen in the lower view of the figure, the resultant one-dimensional coordination polymer is linear. This resembles the situation observed for the R = ethyl [9] and the R = isopropyl [10] derivatives. Thus, the four structures of the general formula {Cd[S 2 P(OEt) 2 ] 2 (3-PyAld)}n, R = methyl (I), ethyl [9], isopropyl [10,11] and cyclohexyl [12] adopt the same structural motif in the solid-state.…”

Crystal structure of catena-poly[(bis(O,O′-diethyl dithiophosphato-κ2 S,S′)-μ2-1,2-bis(3-pyridylmethylene)hydrazine-κ2 N:N′)cadmium(II)], {C20H30CdN4O4P2S4}n

“…Thus, for {Cd[S 2 P(OR) 2 ](n-PyAld)} 2 , when n = 3 and R = Me [10], iPr [11,12] and Cy [13], linear coordination polymers, with a stepladder topology, are found. When n = 4, and R = Et [14] and iPr [11], linear coordination polymers are found. However, it should be noted that zero-dimensional species are sometimes isolated when polymeric species might otherwise be anticipated.…”

“…Nevertheless, the P1-S1, S2 [1.9862(6) and 1.9963(6) Å] differ by only 0.01 Å. Significantly, more symmetric coordination modes are noted in the R = Me [10] and iPr [12] analogues but, the situation in (I) matches that seen in the R = Cy structure [13] where the difference in the Cd-S bond lengths amounts to 0.021 Å. The Cd-N bond length is 2.3830(13) Å.…”