cyclopentadienyl ligand造句

• Another ? metal interaction directly involved with catalysis involves cyclopentadienyl ligands.
• Like some other metallocenes, the cyclopentadienyl ligands of chromocene are displaceable.
• The reaction involves the displacement of cyclopentadienyl ligands by the formation of cyclopentadiene:
• Prominent members of this class are complexes with CO, arene, and cyclopentadienyl ligands.
• The isolobal relationship of the imido and the cyclopentadienyl ligands is the key to this comparison.
• For the metallocene catalysts, the cyclopentadienyl ligands ( or their surrogates ) fulfill this role.
• When bound in the terminal linear fashion, the ligand shows steric properties similar to a cyclopentadienyl ligand.
• Cone angles of a tert-butyl phosphinimide ligands and cyclopentadienyl ligands when bonded to a metal centre.
• It is popularly used as a precursor to the cyclopentadienyl ligand ( Cp ) in cyclopentadienyl complexes in organometallic chemistry.
• In this system, bonding to one of the 5-membered acts like a cyclopentadienyl ligand with multiple substituents.
• Removal of one molecule of CO and again donation of two more electrons by the cyclopentadienyl ligand restores the ? 5-cyclopentadienyl.
• Olefins tethered to cyclopentadienyl ligands have been shown to coordinate to calcium ( II ), strontium ( II ), and barium ( II ):
• In another example the cage consists of a gallium cyclopentadienyl ligand ( red ) and a 1, 3, 7-octatriene ligand ( blue ).
• In the solid state below-159 癈, manganocene adopts a polymeric structure with every manganese atom coordinated by three cyclopentadienyl ligands, two of which are bridging ligands.
• Within the unsubstituted cyclopentadienyl ligand, the carbon carbon bond lengths vary between 1.35 ?and 1.40 ?and the internal bond angles vary between 107?and 109?
• X-ray diffraction analysis of this compound confirms that the cyclopentadienyl ligands are not co-planar with the benzene core but have alternating dihedral angles of + 30?and  " 80?
• In the rhodocene dimer, the coupled cyclopentadienyl ligands are 4-electron tetrahapto donors to each rhodium ( I ) metal centre, in contrast to the 6-electron pentahapto cyclopentadienyl donors.
• A few examples oinclude trispyrazolylborates ( Tp ), cyclopentadienyl ligands ( Cp ), and many chelating diphosphines such as 1, 2-bis ( diphenylphosphino ) ethane ligands ( dppe ).
• It is believed that in the case of decamethyldizincocene the bending of the methyl groups attached to the cyclopentadienyl ligands is preferential because it concentrates the electron density away from the central, positively charged metal atoms.
• In it the U-Cl bond is an ionic bond and the uranium bonds with the three cyclopentadienyl ligands are covalent of the type found in sandwich compounds with involvement of the uranium 5f atomic orbitals.