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Lanthanideamidecomplexesareanim portantclassofprecursorsforlanthanidederivatives .Itcanbeeasilytransformedtocor respondinglanthanidecomplexbyreactingwithinvolvingproticreagents[1,2 ] .Thelanthanideamideusedassyntheticprecursorisneutralhomolepticcomplex ,oth… 相似文献
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Polyεcaprolactoneisofgreatinterestformedicalapplicationsbecauseoftheirbiodegradability,biocompatibilityandpermeabilitytomanydrugs.Increasingattentionispaidtoexplorelanthanidecomplexassinglecomponentcatalystsforringopeningpolymerizationofεcaprolactone.… 相似文献
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A neutral homoleptic lanthanide amide Yb(NPh2)3(THF)2 was obtained by reaction of anhydrous YbCl3 with LiNPh2 in THF. The product was characterized by elemental analysis, infrared spectrum and X-ray crystallographic analysis. The crystal data are monoclinic, P21/n space group, a=1.2052(2) nm, b=1.9369(3) nm, c=1.6523(2) nm, β=92.79(1)°, V=3.8524(9) nm3, Z=4, Dc=1.417 g*cm-3, μ=24.67 cm-1 (Mo Kα), F(000)=1668, R=0.036, Rw=0.039. The central metal ytterbium is coordinated by three terminal NPh2 groups and two THF molecules to form a five-coordinate distorted trigonal bipyramid. The mean Yb-N bond length is 0.2219(6) nm. 相似文献
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