摘要
The title complex, \[La(btec) 1/2 (H 2 btec) 1/2 [KG*6](H 2 O)\] n n (H 4 btec=1,2,4,5 benzenetetracarboxylic acid) (1) was synthesized by the hydrothermal reaction of 1,2,4,5 benzenetetracarboxylic dianhydride with La(NO 3 ) 3 ·6H 2 O in H 2 O, and crystallizes in the triclinic system, space group P 1 with a = 0.64403(3) nm, b = 0.94500(4) nm, c = 0.96380(5) nm, α = 88.535(2)°, β = 100.314(2)°, γ = 76.6470(10)° , V = 1.60968(10) nm 3 , Z =2, and final R = 0.0274 , R w = 0.0735. In 1, each La(III) ion is coordinated by eight oxygen atoms from six carboxylate groups and one coordinated water molecule. Two different coordination modes of H 4 btec were present in the structure, one of which contains two protonated carboxylate groups to balance the charge.
The title complex, \[La(btec) 1/2 (H 2 btec) 1/2 [KG*6](H 2 O)\] n n (H 4 btec=1,2,4,5 benzenetetracarboxylic acid) (1) was synthesized by the hydrothermal reaction of 1,2,4,5 benzenetetracarboxylic dianhydride with La(NO 3 ) 3 ·6H 2 O in H 2 O, and crystallizes in the triclinic system, space group P 1 with a = 0.64403(3) nm, b = 0.94500(4) nm, c = 0.96380(5) nm, α = 88.535(2)°, β = 100.314(2)°, γ = 76.6470(10)° , V = 1.60968(10) nm 3 , Z =2, and final R = 0.0274 , R w = 0.0735. In 1, each La(III) ion is coordinated by eight oxygen atoms from six carboxylate groups and one coordinated water molecule. Two different coordination modes of H 4 btec were present in the structure, one of which contains two protonated carboxylate groups to balance the charge.
基金
theNationalNaturalScienceFoundationofChina (No .2 990 10 0 5 )
