Reactions of
<scp>Rare‐Earth</scp>
Metal Based Lewis Pairs with Azides
<sup>†</sup>
作者:Yifan Dong、Kejian Chang、Xin Xu
DOI:10.1002/cjoc.202000038
日期:2020.6
nitrogen‐containing Lewis base 1,4‐diazabicyclo[2.2.2]octane (DABCO) produced analogous rare‐earth azide complexes with [Me3Si‐DABCO]+ counterions. In contrast, reaction of the La(OAr)3/PEt3 Lewis pair with 1‐adamantyl azide (AdN3) afforded the typical frustrated Lewis pair‐type 1,1‐addition product. A tetrahydrofuran ring‐opening reaction was also observed for the resulting rare‐earth azide complex with
本文已经研究了基于均稀土金属芳基氧化物的路易斯对有机叠氮化物底物的反应性。以2:1:1摩尔比处理RE(OAr)3(RE = La,Sm,Y和Sc,Ar = 2,6 - t Bu 2 -C 6 H 3),PEt 3和Me 3 SiN 3导致形成分离的离子对络合物[Me 3 Si-PEt 3 ] + [(ArO)3 RE-N = N = N-RE(OAr)3 ] –在温和的条件下。用含氮的路易斯碱1,4-二氮杂双环[2.2.2]辛烷(DABCO)取代膦可生成与[Me 3 Si-DABCO] +抗衡离子相似的稀土叠氮化物配合物。相比之下,La(OAr)3 / PEt 3 Lewis对与1-金刚烷基叠氮化物(AdN 3)的反应提供了典型的沮丧的Lewis对类型的1,1加成产物。还观察到了与[Me 3 Si-PEt 3 ] +阳离子形成的稀土叠氮化物配合物的四氢呋喃开环反应,并通过Si / P配合作用裂解了CO键。
Reactivity of Trimethylaluminum with Lanthanide Aryloxides: Adduct and Tetramethylaluminate Formation
substituted lanthanide(III) and -(II) aryloxide complexes with trimethylaluminum (TMA) was investigated. The solvent-free, π-arene-bridged dimers [Ln(OAriPr,H)3]2, derived from the ortho-iPr2-substituted aryloxide ligand OC6H3iPr2-2,6, form bis-TMA adduct complexes, Ln(OAriPr,H)3(AlMe3)2, for the metal centers yttrium, samarium, and lanthanum. Homoleptic monomeric Ln(OAr)3, featuring a large La center
The selective insertion of carbon dioxide into a lanthanide(III) 2,6-di-t-butyl-phenoxide bond
作者:Leigh Anna M. Steele、Timothy J. Boyle、Richard A. Kemp、Curtis Moore
DOI:10.1016/j.poly.2012.05.021
日期:2012.7
Abstract An investigation of the CO2(g) insertion products for a series of fully characterized monomeric lanthanide 2,6-di-t-butyl-phenoxide compounds ([Ln(DBP)3]; Ln = Ce (1), Sm (2), Dy (3), Y (4), Er (5), Yb (6), and Lu (7)) was undertaken at low pressure (
Aminotroponimines as Ligands for Yttrium and Lanthanide Complexes
作者:Peter W. Roesky
DOI:10.1002/cber.19971300708
日期:1997.7
Y, La, Sm), which can be obtained from ([i-Pr)2ATI]K and LnX3 and LnX3 (X = Cl, I), or Y[O(2,6-t-BuC6H3)]3. All compounds have been characterized by spectroscopic methods. The monosubstituted yttriumcomplex [(i-Pr)2ATI]YCl2(THF)2}2 has also been investigated by single crystal X-ray diffraction.
N-异丙基-2-(异丙基氨基)托铵亚胺[(i -Pr )2 ATI] H与KH在THF中的反应得到[(i- Pr)2 ATI] K。这是制备单,双和三取代的化合物[[ i -Pr)2 ATI] YCl 2-(THF)2 } 2,[(i- Pr)2 ATI 2 Y的有用原料。[O(2,6,t-Bu 2 C 6 H 3)]和[(i - Pr)2 -ATI] 3 Ln(Ln = Y,La,Sm),可从([ i -Pr )2 ATI] K和LnX 3和LnX 3(X = Cl,I)或Y [O(2,6- t -BuC 6 H 3)] 3。所有化合物均已通过分光光度法进行了表征。还通过单晶X射线衍射研究了单取代的钇配合物[((i- Pr)2 ATI] YCl 2(THF)2 } 2。
Monocyclopentadienyl yttrium chemistry: incorporation of alkoxides as supporting ligands and synthesis of [Y(C<sub>5</sub>Me<sub>5</sub>)(OC<sub>6</sub>H<sub>3</sub>Bu<sup>t</sup><sub>2</sub>)(µ-H)]<sub>2</sub>
作者:Colin J. Schaverien、John H. G. Frijns、Hero J. Heeres、J. R. van den Hende、Jan H. Teuben、Anthony L. Spek
DOI:10.1039/c39910000642
日期:——
Reaction of the crystallographically characterised [Y(C5Me5)(OC6H3But2)2]2 with LiCH(SiMe3)2 affords the mixed alkyl–alkoxide species [Y(C5Me5)CH(SiMe3)2}(OC6H3But2)]3 which, on subsequent hydrogenation, gives the hydride bridged dimer [Y(C5Me5)(OC6H3But2)(µ-H)}2]4; 89Y NMR spectra of these, and related complexes, allows C5Me5, OC6H3But2 and CH(SiMe3)2 group contributions to be determined.