A novel La complex with methyl-2-pyridyl ketone benzoyl hydrazone has been synthesized and determined by single crystal X-ray diffraction. The crystal is monoclinic with space group C2/c, a =1 7081(3) nm, b =1 ...A novel La complex with methyl-2-pyridyl ketone benzoyl hydrazone has been synthesized and determined by single crystal X-ray diffraction. The crystal is monoclinic with space group C2/c, a =1 7081(3) nm, b =1 5660(3) nm, c =1 3512(3) nm, α=90 00°, β=94 39(1)°, γ=90 00°, V =3 6037(12) nm 3, Z =4 . The complex is a ten-coordinated one with a lanthanum ion surrounded by a N 4O 6 set. The crystal structure is stabilized by hydrogen bonds between water molecules and NO - 3 anions.展开更多
Since the 90's of 20th century Jacobsen designedand synthesized the chiral C2-symmetric salen typecomplex, a large number of chiral schiff base com-plexes have been developed as catalysts for vari-ous asymmetric r...Since the 90's of 20th century Jacobsen designedand synthesized the chiral C2-symmetric salen typecomplex, a large number of chiral schiff base com-plexes have been developed as catalysts for vari-ous asymmetric reactions including evantioselectiveepoxidation of unfunctionalized alkenes.展开更多
基金Supported by the National Natural Science Foundation of China( No. 2 98710 14 ) and the Foundation of Doctor byL anzhou U niversit
文摘A novel La complex with methyl-2-pyridyl ketone benzoyl hydrazone has been synthesized and determined by single crystal X-ray diffraction. The crystal is monoclinic with space group C2/c, a =1 7081(3) nm, b =1 5660(3) nm, c =1 3512(3) nm, α=90 00°, β=94 39(1)°, γ=90 00°, V =3 6037(12) nm 3, Z =4 . The complex is a ten-coordinated one with a lanthanum ion surrounded by a N 4O 6 set. The crystal structure is stabilized by hydrogen bonds between water molecules and NO - 3 anions.
文摘Since the 90's of 20th century Jacobsen designedand synthesized the chiral C2-symmetric salen typecomplex, a large number of chiral schiff base com-plexes have been developed as catalysts for vari-ous asymmetric reactions including evantioselectiveepoxidation of unfunctionalized alkenes.
