2002
DOI: 10.1002/1521-3765(20020816)8:16<3773::aid-chem3773>3.0.co;2-s
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Neodymium Alkoxides: Synthesis, Characterization and Their Combinations with Dialkylmagnesiums as Unique Systems for Polymerization and Block Copolymerization of Ethylene and Methyl Methacrylate

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Cited by 92 publications
(56 citation statements)
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“…Two additional μ 3 -bridging alkoxy ligands (O1 and O2) are present below and above the triangular plane, resulting in a 6-fold oxygen coordination around each of the Pr centers as generally favored by this class of lanthanide compounds. 12,23 The obtained molecular structure is similar to those reported for yttrium, lanthanum, terbium, and gadolinium tert-butoxides. 6a,b,11,13 Herein, the Pr−O bond lengths (Table 4) fit well with the trend of the Ln−O bond 24 ).…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…Two additional μ 3 -bridging alkoxy ligands (O1 and O2) are present below and above the triangular plane, resulting in a 6-fold oxygen coordination around each of the Pr centers as generally favored by this class of lanthanide compounds. 12,23 The obtained molecular structure is similar to those reported for yttrium, lanthanum, terbium, and gadolinium tert-butoxides. 6a,b,11,13 Herein, the Pr−O bond lengths (Table 4) fit well with the trend of the Ln−O bond 24 ).…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…A full listing of individual compounds would be prohibitively long, and as many of the products are not organometallic species, they are often discussed in other places, such as CCC (2004). 206 Dialkylmagnesium Figure 25). It has been used to produce magnesium thiolates, 176-178 amides 179-184 (sometimes with heteroleptic alkyl/amide species), 180,185 carboxylato or carbamato complexes, 186 furfurylamides, 187 isothiocyanate and carbodiimide insertion products, 149 phosphides, 185,188-190 hydrazides, 191,192 phosphanediides, 193,194 arsandiides, 195 arsinoanilides, 196 aryloxides, [197][198][199] siloxides, 199 molecular hydrides, 200 4 .…”
Section: Reactionsmentioning
confidence: 99%
“…In 2000, a neodymium t-butoxide complex, [Nd 3 (l 3 -OBu t ) 2 (l 2 -OBu t ) 3 (OBu t ) 4 (THF) 2 ] (56), was reported to show moderate activity for ethylene polymerization in the presence of one equivalent of dialkylmagnesium in toluene at 0°C [45,46]. Progressive deactivation of the catalyst system was observed above 20°C.…”
Section: Cp-free Complexesmentioning
confidence: 99%
“…During the course of the polymerization, polymer-like precipitate appears in the reaction mixture. The precipitate is assumed to be a Nd-polyethylenyl compound, which still has activity for further ethylene polymerization and enables block copolymerization of ethylene with MMA [46]. Calixarene complexes of rare earth metals exhibit moderate activity in the presence of AlBu i 3 , although their structures are not clear [48].…”
Section: Cp-free Complexesmentioning
confidence: 99%