Reversible Addition of CO to Coordinatively Unsaturated High-Spin Iron(II) Complexes
作者:Christian Holzhacker、Christina M. Standfest-Hauser、Michael Puchberger、Kurt Mereiter、Luis F. Veiros、Maria José Calhorda、Maria Deus Carvalho、Liliana P. Ferreira、Margarida Godinho、František Hartl、Karl Kirchner
DOI:10.1021/om200711q
日期:2011.12.26
[Fe(PN-iPr)X2] added readily CO to form, depending on the nature of X, the mono- and dicarbonyl complexes [Fe(PN-iPr)(X)2(CO)] (X = Cl) and [Fe(PN-iPr)(CO)2X2] (X = Cl, Br), respectively. In the case of X = Br, two isomeric dicarbonyl complexes, namely, cis-CO,trans-Br-[Fe(PN-iPr)(CO)2Br2] (major species) and cis-CO,cis-Br-[Fe(PN-iPr)(CO)2Br2] (minor species), are formed. The addition of CO to [Fe(PN-iPr)X2]
[Fe(EN -i Pr)X 2 ](E = P,S,Se; X = Cl,Br)和[Fe(ON- i Pr)2 X]的几种新的配位不饱和铁(II)配合物制备了基于N-(2-吡啶基)氨基膦的含X的双齿EN配体及其氧代,硫代和硒代衍生物,并通过NMR光谱和X射线晶体学表征。穆斯堡尔谱和磁化研究证实他们的高自旋性质与磁矩非常接近4.9μ乙,反映预期4不成对d电子所有这些化合物中。[Fe(PN -i Pr)2(CO)X] X(X = Cl,Br)和顺式-CO,顺式BR-的[Fe(PN -i PR)(CO)2 X 2 ](X = Br的)通过使获得的顺式-Fe(CO)4 X 2与更强的PN供体配体,但不与较弱的EN供体配体(E = O,S,Se)。此外,通过红外光谱研究了[Fe(PN- i Pr)X 2 ]对CO的反应性。室温下没有反应发生,在-50°C时[Fe(PN- i Pr)X 2 ]容易添