RT info:eu-repo/semantics/article T1 Preparation of imido pentamethylcyclopentadienyl molybdenum(IV) complexes. X-ray molecular structure of cis-[MoCp*CI(η-NtBu)]2·C6H6 A1 Pedraz Gallego, Teresa A1 Pellinghelli, Maria Angela A1 Royo Gracia, Pascual A1 Tiripicchio, Antonio A1 Vázquez de Miguel, Amelio K1 Molybdenum K1 X-ray structure K1 lmido complexes K1 Ciencia K1 Química inorgánica K1 Science K1 Chemistry, inorganic AB The reduction of [MoCp * Cl2(NtBu)] 1 with 1 equiv. of 10% sodium amalgam in the presence of CN(2,6-Me2C6H3) yields the green crystalline compound [MoCp * Cl(NtBuCN(2,6-Me2C6H3)] 2 which can be alkylated by MgClMe to give [MoCp * Me(NtBu)CN(2,6-Me2C6H3)] 3. The same reduction in the absence of ligands leads to an almost equimolar mixture of compounds identified as cis- and trans-[MoCp* (μ-Cl)(NtBu)]24 which are slowly and irreversibly transformed into cis-[MoCp * Cl(μ-NtBu)]25 by heating a toluene solution at 90°C. Compounds (cis + trans)-4 and cis-5 are alkylated by MgClMe leading to the same final methyl derivative [MoCp * Me(μ-NtBu)]26, and react with ethylene to yield the adduct [MoCp * Cl(NtBu)(C2H4)] 7. All new complexes were characterized by their analytical composition, IR and NMR spectroscopy and mass spectrometry, and the structure of the benzene solvate of cis-[MoCp * Cl(μ-NtBu)]25 was determined by X-ray diffraction methods. PB Elsevier SN 0022-328X YR 1997 FD 1997 LK http://hdl.handle.net/10017/4471 UL http://hdl.handle.net/10017/4471 LA eng NO Italian Consiglio Nazionale delle Ricerche DS MINDS@UW RD 29-mar-2024