Synthesis of Heteroleptic Cerium(III) Anionic Amido-Tethered N-Heterocyclic Carbene Complexes
作者:Stephen T. Liddle、Polly L. Arnold
DOI:10.1021/om050061b
日期:2005.5.1
t-BuNH2CH2CH2[HCMeN(CHCH)N}]2Br (12, H3L2Br2) and the amine−N-heterocyclic carbene t-BuNHCH2CH2[CMeN(CHCH)N}] (13, HL2) have been synthesized. However, attempts to prepare and isolate the lithium amido−N-heterocyclic carbene t-BuNLiCH2CH2[CMeN(CHCH)N}] (14, LiL2) were unsuccessful. Transamination of [(HL1)LiBr] (2) with [CeN(SiMe3)2}3] successfully affords the compounds [(L1)Ce(N[SiMe3]2)(μ-Br)}2] (15) and
A structural investigation of heteroleptic lanthanide substituted cyclopentadienyl complexes
作者:Fabrizio Ortu、Jonathan M. Fowler、Matthew Burton、Alasdair Formanuik、David P. Mills
DOI:10.1039/c5nj00761e
日期:——
The synthesis and structural authentication of novel heteroleptic lanthanide complexes supported by bulky cyclopentadienyl ligands is herein presented. Steric effects play a fundamental role in the coordination motifs.
Lanthanide tri-benzyl complexes: structural variations and useful precursors to phosphorus-stabilised lanthanide carbenes
作者:Ashley J. Wooles、David P. Mills、William Lewis、Alexander J. Blake、Stephen T. Liddle
DOI:10.1039/b911717b
日期:——
Reaction of [Ln(I)3(THF)4] (Ln = Ce, Pr) or [Ln(I)3(THF)3.5] (Ln = Nd, Sm, Gd, Dy, Er) with three equivalents of [KBz] (Bz = CH2C6H5) at 0 °C afforded the corresponding lanthanide tri-benzyl complexes [Ln(Bz)3(THF)3] [Ln = Ce (2), Pr (3), Nd (4), Sm (5), Gd (6), Dy (7), Er (8) La (11)] in 48–75% crystalline yields, with the exception of the redox active samarium complex, which was isolated in poor
Cerium-Catalyzed Hydrosilylation of Acrylates to Give α-Silyl Esters
作者:Aradhana Pindwal、Smita Patnaik、William C. Everett、Arkady Ellern、Theresa L. Windus、Aaron D. Sadow
DOI:10.1002/anie.201610263
日期:2017.1.9
spectroscopy and X‐ray crystallography indicate that each alkyl ligand contains two bridging Ce↼H‐Si interactions in both 1 and 2. Compound 2 serves as a precatalyst for the hydrosilylation of acrylates to give α‐silyl esters at room temperature with a turnover number of 2200.
均相有机铈配合物Ce C(SiHMe 2)3 } 3(1)与B(C 6 F 5)3反应生成两性离子双(烷基)氢硼酸盐Ce C(SiHMe 2)3 } 2 HB(C 6 F 5)3(2)。NMR,IR光谱和X射线晶体学表明,每个烷基配体在1和2中都包含两个桥接的Ce↼H-Si相互作用。化合物2 用作丙烯酸酯的硅氢加成反应的预催化剂,在室温下以2200的营业额产生α-甲硅烷基酯。
Experimental and Theoretical Comparison of Actinide and Lanthanide Bonding in M[N(EPR<sub>2</sub>)<sub>2</sub>]<sub>3</sub> Complexes (M = U, Pu, La, Ce; E = S, Se, Te; R = Ph, <i>i</i>Pr, H)
作者:Andrew J. Gaunt、Sean D. Reilly、Alejandro E. Enriquez、Brian L. Scott、James A. Ibers、Perumal Sekar、Kieran I. M. Ingram、Nikolas Kaltsoyannis、Mary P. Neu
DOI:10.1021/ic701618a
日期:2008.1.1
Treatment of M[N(SiMe3)2]3 (M = U, Pu (An); La, Ce (Ln)) with NH(EPPh2)2 and NH(EPiPr2)2 (E = S, Se), afforded the neutral complexes M[N(EPR2)2]3 (R = Ph, iPr). Tellurium donor complexes were synthesized by treatment of MI3(sol)4 (M = U, Pu; sol = py and M = La, Ce; sol = thf) with Na(tmeda)[N(TePiPr2)2]. The complexes have been structurally and spectroscopically characterized with concomitant computational