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Synthesis, Structure, and Reactivity of Organometallic Lanthanide-Dizirconium Nonaisopropoxide Complexes

机译:有机金属镧系元素-二氮杂异丙氧化物配合物的合成,结构和反应性

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The feasibility of using [Zr_2(OiPr)_9]~- as a stabilizing, ancillary ligand in organometallic lanthanide complexes has been examined. The dizirconium nonaisopropoxide (dzni) ligand has been found to be compatible with cyclopentadienyl and cyclooctatetraenyl reagents and enhances the solubility of divalent lanthanide organometallic species in comparison with (C_5H_5)~- analogues. [{[Zr_2(OiPr)_9]LnI}_2] reacts with NaC_5H_5 to form the hexanesoluble divalent lanthanide complexes [{Zr_2(OiPr)_9}Ln(C_5H_5)] (1: Ln = Sm; 2: Ln = Yb). complex 1 is the first reported soluble (C_5H_5)~- complex of Sm~(II). [{[Zr_2(OiPr)_9]LnI}_2] reacts with K_2C_8H_8 to form the bimetallic Ln~(II) complexes [{[Zr_2(OiPr)_9]Ln}_2(C_8H_8)] (3: Ln = Sm; 4: Ln = Yb), which are also hexanesoluble. Complex 3 reacts with 1, 3, 5, 7-C_8H_8 to form hexane-soluble [{Zr_2(OiPr)_9}Sm(C_8H_8)], 5, in a manner analogous to the reduction of C_8H_8 by [{(C_5Me_5)Sm}_2(C_8H_8)]. In all these complexes, the monoanionic [Zr_2(OiPr)_9]~- unit is attached to the lanthanide metal in a tetradentate fashion.
机译:研究了在有机金属镧系元素络合物中使用[Zr_2(OiPr)_9]〜-作为稳定的辅助配体的可行性。与(C_5H_5)〜-类似物相比,已发现九异丙醇二锆(dzni)配体与环戊二烯基和环辛二烯基试剂兼容,并提高了二价镧系金属有机物的溶解度。 [{[Zr_2(OiPr)_9] LnI} _2]与NaC_5H_5反应形成可溶于己烷的二价镧系元素络合物[{Zr_2(OiPr)_9} Ln(C_5H_5)](1:Ln = Sm; 2:Ln = Yb)。配合物1是第一个报道的Sm-(II)的可溶性(C_5H_5)-配合物。 [{[Zr_2(OiPr)_9] LnI} _2]与K_2C_8H_8反应形成双金属Ln〜(II)配合物[{[Zr_2(OiPr)_9] Ln} _2(C_8H_8)](3:Ln = Sm; 4 :Ln = Yb),也可溶于己烷。络合物3与1、3、5、7-C_8H_8反应形成可溶于己烷的[{Zr_2(OiPr)_9} Sm(C_8H_8)],5,其方式类似于将C_8H_8还原为[{(C_5Me_5)Sm } _2(C_8H_8)]。在所有这些络合物中,单阴离子[Zr_2(OiPr)_9]-单元以四齿形式连接到镧系金属上。

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