I Introduction The abnormal photoreaction property of o-nitrobenzaldehyde, which is one of the standard scintillators and the reference material in quantum etficient measurement of photochernistry, has been paid much ...I Introduction The abnormal photoreaction property of o-nitrobenzaldehyde, which is one of the standard scintillators and the reference material in quantum etficient measurement of photochernistry, has been paid much attention to. Up to now, however, its photoreaction mechanism has not been cleared yet. Tech et al observed the ESR spectrum produced in the photochemical reaction of alcohol solution of o-nitrobenzaldehyde, but they did not展开更多
A novel coordination polymer, [Ag4(bpdc)(H2bpdc)(Hbpdc)2]n (bpdc=2,2'-bipyridyl-3,3'-dicarboxylate), was hydrothermally synthesized at 403 K and structurally characterized by single crystal X-ray diffraction ...A novel coordination polymer, [Ag4(bpdc)(H2bpdc)(Hbpdc)2]n (bpdc=2,2'-bipyridyl-3,3'-dicarboxylate), was hydrothermally synthesized at 403 K and structurally characterized by single crystal X-ray diffraction analysis. The compound crystalizes in the monoclinic space group C2/c with a=1.9516(4) nm, b=1.9503(4) nm, c=1.2566(3) nm, and β=112.48(3)°. In the two-dimensional crystal structure, AgI center is coordinated, in a scarce coordination environment, double-capped tetrahedron, by one bpdc ligand to form N—Ag—N chelate bond via two pyridyl N atoms, and other two bpdc ligands to form two O—Ag—O chelate bonds, respectively, via two carboxyl O atoms. The bpdc ligands are present in one non-protonated form, bpdc, and two protonated forms, Hbpdc and H2bpdc, which all act as μ3-ligand in a hexadentate fashion (N, N'; O, O'; O, O') to coordinate with three Ag centers, respec- tively, through the three chelate bonds. This coordinated fashion of bpdc ligand is first found in the title compound. UV-Vis-NIR reflectance spectroscopy study revealed insulator nature for the crystal with an optical energy gap of 3.1 eV.展开更多
基金Project supported by the National Natural Science Foundation of China.
文摘I Introduction The abnormal photoreaction property of o-nitrobenzaldehyde, which is one of the standard scintillators and the reference material in quantum etficient measurement of photochernistry, has been paid much attention to. Up to now, however, its photoreaction mechanism has not been cleared yet. Tech et al observed the ESR spectrum produced in the photochemical reaction of alcohol solution of o-nitrobenzaldehyde, but they did not
基金Project supported by the State Key Laboratory of Structural Chemistry for Unstable and Stable Species China ( No. 200301).
文摘A novel coordination polymer, [Ag4(bpdc)(H2bpdc)(Hbpdc)2]n (bpdc=2,2'-bipyridyl-3,3'-dicarboxylate), was hydrothermally synthesized at 403 K and structurally characterized by single crystal X-ray diffraction analysis. The compound crystalizes in the monoclinic space group C2/c with a=1.9516(4) nm, b=1.9503(4) nm, c=1.2566(3) nm, and β=112.48(3)°. In the two-dimensional crystal structure, AgI center is coordinated, in a scarce coordination environment, double-capped tetrahedron, by one bpdc ligand to form N—Ag—N chelate bond via two pyridyl N atoms, and other two bpdc ligands to form two O—Ag—O chelate bonds, respectively, via two carboxyl O atoms. The bpdc ligands are present in one non-protonated form, bpdc, and two protonated forms, Hbpdc and H2bpdc, which all act as μ3-ligand in a hexadentate fashion (N, N'; O, O'; O, O') to coordinate with three Ag centers, respec- tively, through the three chelate bonds. This coordinated fashion of bpdc ligand is first found in the title compound. UV-Vis-NIR reflectance spectroscopy study revealed insulator nature for the crystal with an optical energy gap of 3.1 eV.
