The title compound (C10H11BrO4, Mr = 275.10) was synthesized and its crystal structure has been determined by single-crystal X-ray diffraction. The crystal is of monoclinic, space group P21/n with a = 7.2960(8), b = 1...The title compound (C10H11BrO4, Mr = 275.10) was synthesized and its crystal structure has been determined by single-crystal X-ray diffraction. The crystal is of monoclinic, space group P21/n with a = 7.2960(8), b = 12.209(1), c = 12.568(1) ? b = 98.120(2)? l = 0.71073 ? m(MoKa) = 3.700 mm-1, V = 1108.3(2) 3, Z = 4, Dc = 1.649 g/cm3 and F(000) = 552. The structure was solved by direct methods and refined by full-matrix least-squares methods. R = 0.0375 and wR = 0.0864 for 1598 reflections with I > 2s(I). X-ray diffraction reveals that there exist two rings in the molecule, and the dihedral between them is 177.5?展开更多
Complexes of La(Ⅲ),Nd(Ⅲ),Sm(Ⅲ),Eu(Ⅲ),Gd(Ⅲ),Dy(Ⅲ), Er(Ⅲ),Yb(Ⅲ)and Y(Ⅲ)with piperonal isonicotinoyl hydrazone(HPIN) have been synthesized in DMF and EtOH.The complexes have been characte- rized by elemental ana...Complexes of La(Ⅲ),Nd(Ⅲ),Sm(Ⅲ),Eu(Ⅲ),Gd(Ⅲ),Dy(Ⅲ), Er(Ⅲ),Yb(Ⅲ)and Y(Ⅲ)with piperonal isonicotinoyl hydrazone(HPIN) have been synthesized in DMF and EtOH.The complexes have been characte- rized by elemental analysis,molar conductance,i.r.,UV and^1H n.m.r. spectra,magnetic measurements,X-ray powder diffraction and DTA.展开更多
文摘The title compound (C10H11BrO4, Mr = 275.10) was synthesized and its crystal structure has been determined by single-crystal X-ray diffraction. The crystal is of monoclinic, space group P21/n with a = 7.2960(8), b = 12.209(1), c = 12.568(1) ? b = 98.120(2)? l = 0.71073 ? m(MoKa) = 3.700 mm-1, V = 1108.3(2) 3, Z = 4, Dc = 1.649 g/cm3 and F(000) = 552. The structure was solved by direct methods and refined by full-matrix least-squares methods. R = 0.0375 and wR = 0.0864 for 1598 reflections with I > 2s(I). X-ray diffraction reveals that there exist two rings in the molecule, and the dihedral between them is 177.5?
文摘Complexes of La(Ⅲ),Nd(Ⅲ),Sm(Ⅲ),Eu(Ⅲ),Gd(Ⅲ),Dy(Ⅲ), Er(Ⅲ),Yb(Ⅲ)and Y(Ⅲ)with piperonal isonicotinoyl hydrazone(HPIN) have been synthesized in DMF and EtOH.The complexes have been characte- rized by elemental analysis,molar conductance,i.r.,UV and^1H n.m.r. spectra,magnetic measurements,X-ray powder diffraction and DTA.
