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The two complexes [Cu(C5H2N2O4)(H2O)3]·2H2O (1) and [Ni(C5H2N2O4)(H2O)4]·H2O (2) were synthesized by self assembly reactions of Cu(NO3)2·3H2O or Ni(CH3COO)2·4H2O with orotic acid (2,6 dioxo 1,2,3,6 tetrahydro 4 pyrimidinecarboxylic acid), respectively. Their crystal structures were determined by single crystal X ray diffraction analyses. Crystallographic data for complex 1: C5H8N2CuO7·2H2O, Mr=307.7, monoclinic P21/n, a=0.57710(1)nm, b=1.76863(6)nm, c=1.09955(4)nm, β=98.600(2)°, V=1.109.63(6)nm3, Z=4 , Dc=1.842g·cm-3, μ(MoKα)=2.010mm-1, F(000)=628, R=0.0436, wR=0.1015, And for complex 2: C5H10N2NiO8·H2O, Mr=302.88, orthorhombic Pbcn, a=2.0763(1)nm, b=1.69355(9)nm, c=0.73478(4)nm, V=2.5837(2)nm3, Z=8, Dc=1.557g·cm-3, μ(MoKα)=1.538 mm-1, F(000)=1248, R=0.0545, wR=0.1305. The X ray analyses revealed that the Cu? and Ni? atoms are both coordinated by carboxylic O atom and contiguous N atom of the pyrimidine ring. In complex 1 the Cu? atom has a slightly distorted square pyramid coordination environment with additional three water molecules, while in complex 2 the Ni? atom adopts a slightly distorted octahedral geometry with additional four water molecules. The three dimensional frameworks of the two complexes are formed by intermolecular hydrogen bonding interactions. CCDC: 1, 204881; 2, 204882.
The two complexes [Cu (C5H2N2O4) (H2O) 3] · 2H2O (1) and [Ni (C5H2N2O4) (H2O) 4] · H2O (2) were synthesized by self- assembly reactions of Cu (NO3) 2 · 3H2O or Ni (CH3COO) 2 · 4H2O with orotic acid (2,6 dioxo 1,2,3,6 tetrahydro 4 pyrimidinecarboxylic acid), respectively. Their crystal structures were determined by single crystal X ray diffraction analyzes. Crystallographic data for complex 1: C5H8N2CuO7 · 2H2O, Mr = 307.7, monoclinic P21 / n, a = 0.57710 (1) nm, b = 1.76863 (6) nm, c = 1.09955 (4) nm, β = 98.600 ) nm3, Z = 4, Dc = 1.842 g · cm -3, μ (MoKα) = 2.010 mm -1, F (000) = 628, R = 0.0436, wR = 0.1015, And for complex 2: C5H10N2NiO8 · H2O, (2) nm3, Z = 8 and Dc = 1.557g · cm-1 for Mr = 302.88, orthorhombic Pbcn, a = 2.0763 nm, b = 1.69355 nm, c = 0.73478 nm, 3, μ (MoKα) = 1.538 mm-1, F (000) = 1248, R = 0.0545, wR = 0.1305. The X ray analyzes showed that the Cu and Ni atoms are both coordinated by the carboxylic O atom and the contiguous N atom of the pyrimidine ring. In complex 1 the Cu? atom has a slightly distorted sq uare pyramid coordination environment with additional three water molecules, while in complex 2 the Ni? atom adopts a slightly distorted octahedral geometry with additional four water molecules. The three dimensional frameworks of the two complexes are formed by intermolecular hydrogen bonding interactions. CCDC: 1, 204881; 2, 204882.