Abstract: The Zr-H bond of zirconocene hydridochloride was heterolyzed at room temperature by five compounds containing nitrogen and hydroxyl group to give Cp(Q)₂ZrCl(1) (Cp=cyclopentadienyl and Q=8-quinolinoyl), Cp(Q-Me)₂ZrCl(2), Cp(5,7-Br₂Q)₂ZrCl(3), Cp₂(2-pyridoyl)ZrCl(4), and Cp(2-aminoethanoyl)₂ZrCl(5), which were characterized by elemental analysis, IR, and ¹HNMR spectroscopy. The molecular structure of 1 was confirmed by X-ray diffraction determination. The crystal of 1 crystallized monoclinically, space group P2₁/n a= 0.9004(2), b=1.3961(2), c=1. 6056(2) nm, β=99. 48(1)°, V=1. 9906 nm³, Z=4, and D_c=1. 582 g/cm³. The coordination polyhedron around the Zr atom can be described as a distorted octahedron. The Zr-N bonds of 0. 2364(3) and 0. 2377(4) nm suggest that they are coordination bonds. The two planar 8-quinolinoyl groups as bidentate ligands chelate with Zr atom, forming a dihedral angle of 108. 4(1)°.

Key words: Syntheses, Characterization, Heterocyclic compounds of Zirconium