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- W2023441672 abstract "Reaction of neodymium metal with 1.5 equiv of elemental iodine in iso-propanol, followed by crystallization from THF, leads to isolation of NdI3(THF)x (1). Compound 1 reacts with one equiv of KC5Me5 to produce the mono-pentamethylcyclopentadienyl derivative (η-C5Me5)NdI2(THF)3 (2) in moderate yield. Treatment of 2 with an excess of pyridine in toluene leads to displacement of the THF ligands and formation of the tris-pyridine adduct (η-C5Me5)NdI2(py)3 (3). Compound 3 reacts with one equiv of KC5H4SiMe3 to yield the mixed-ring complex (η-C5Me5)(η-C5H4SiMe3)NdI(py) (4). Single crystal X-ray diffraction studies have been performed on complexes 3 and 4. (η-C5Me5)NdI2(py)3 (3) adopts a pseudo-octahedral geometry in the solid state, with the cyclopentadienyl ligand occupying one coordination site, the three pyridine ligands in a mer-configuration, and the iodide ligands trans to one another. The Nd–I distance is 3.1603(5) Å, while Nd–N bond lengths to the pyridine ligands are 2.631(4) and 2.678(6) Å. The solid state structure of (η-C5Me5)(η-C5H4SiMe3)NdI(py) (4) features a typical bent metallocene Cp2MX2 geometry with Nd–I and Nd–N distances of 3.0664(4) and 2.555(4) Å, respectively." @default.
- W2023441672 created "2016-06-24" @default.
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- W2023441672 date "1999-03-01" @default.
- W2023441672 modified "2023-10-16" @default.
- W2023441672 title "Synthesis and characterization of a mixed-ring bis-cyclopentadienyl derivative of neodymium. X-ray crystal structures of (η-C5Me5)NdI2(py)3 and (η-C5Me5)(η-C5H4SiMe3)NdI(py)" @default.
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- W2023441672 doi "https://doi.org/10.1016/s0277-5387(98)00438-0" @default.
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