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A flexible double betaine 1,4-bis(pyridinil-4-carboxylato)-1,4-dimethylbenzene L has been used to generate two Cu(II)-containing metal complexes that exhibit different polymeric structures: [Cu(H2O)2 L]·2NO3 1 and [Cu(H2O)3 L]·2Cl·H2O 2. The crystal structures of 1 and 2 have been determined by single-crystal X-ray diffraction method. Crystal data for 1: triclinic, space group P 1, a = 5.253(2), b = 7.406(3), c = 14.792(5) , α = 84.195(5), β = 80.014(5), γ = 78.053(5)°, V = 553.2(3) 3, Z = 1, F(000) = 293, Dc = 1.717 g/cm3, the final R = 0.0385 and wR = 0.1079 for 1883 observed reflections (I > 2σ(I)); and those for 2: monoclinic, space group P21/c, a = 10.222(3), b = 25.287(7), c = 9.277(3) , β = 93.572(5)°, V = 2393.2(12) 3, Z = 4, F(000) = 1140, Dc = 1.540 g/cm3, the final R = 0.0472 and wR = 0.0956 for 3204 observed reflections (I >2σ(I)).
A flexible double betaine 1,4-bis (pyridinil-4-carboxylato) -1,4-dimethylbenzene L has been used to generate two Cu (II) -containing metal complexes that exhibit different polymeric structures: [Cu ] · 2NO3 1 and [Cu (H2O) 3 L] · 2Cl · H2O 2. The crystal structures of 1 and 2 have been determined by single-crystal X-ray diffraction method. Crystal data for 1: triclinic, space group P 1 , a = 5.253 (2), b = 7.406 (3), c = 14.792 (5) , α = 84.195 (5), β = 80.014 ) 3, Z = 1, F (000) = 293, Dc = 1.717 g / cm3, the final R = 0.0385 and wR = 0.1079 for 1883 observed reflections (I> 2σ (I)); and those for 2: monoclinic , space group P21 / c, a = 10.222 (3), b = 25.287 (7), c = 9.277 3, β = 93.572 (5) °, V = 2393.2 F (000) = 1140, Dc = 1.540 g / cm3, the final R = 0.0472 and wR = 0.0956 for 3204 observed reflections (I> 2σ (I)).