Disposition of the axial ligand in the physical vapor deposition of organometallic complexes
Disposition of the axial ligand in the physical vapor deposition of organometallic complexes
复制标题
有机金属配合物物理气相沉积中轴向配体的配置
DOI：
10.1116/1.3377140
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
R. Wiesendanger
中科院分区：
文献类型：
--
作者：
S. Kuck;Matthias Prostak;M. Funk;M. Bröring;G. Hoffmann;R. Wiesendanger
轴向配体在许多平面金属有机化合物的稳定、官能化和合成中起着重要的作用。轴向配体通常是弱结合的，在催化反应中很容易被激活。在真空条件下，当升华过程用于制备定义明确的分子样品时，必须考虑热激活和随后的解离过程。当轴向配基的配置不确定时，这可能会阻碍对实验数据的正确解释。本文作者在扫描隧道显微镜下系统地研究了FeIII-三苯基钴(FeTPC)-X体系中的轴向配体(X)，其中X=NO，1/2O，Cl和(Et2O)2吸附在铜(111)面上。作者讨论了由于释放的轴向配体在表面上共吸附而产生的不良副作用。NO被认为是原位制备非配位FeTPC的最合适的轴向配体，而轴向配位的FeTPC没有被吸附，轴向配体在许多平面金属有机化合物的稳定、官能化和合成中起着重要的作用。轴向配体通常是弱结合的，在催化反应中很容易被激活。在真空条件下，当升华过程用于制备定义明确的分子样品时，必须考虑热激活和随后的解离过程。当轴向配基的配置不确定时，这可能会阻碍对实验数据的正确解释。本文作者在扫描隧道显微镜下系统地研究了FeIII-三苯基钴(FeTPC)-X体系中的轴向配体(X)，其中X=NO，1/2O，Cl和(Et2O)2吸附在铜(111)面上。作者讨论了由于释放的轴向配体在表面上共吸附而产生的不良副作用。NO是原位制备非配位FeTPC的最合适的轴向配体，而轴向配位的FeTPC的吸附是最合适的。
Axial ligands play an important role in the stabilization, functionality, and synthesis of many planar organometallic complexes. Axial ligands are often weakly bound and can easily be activated in catalytic reactions. Thermal activation and following dissociation processes have to be considered whenever sublimation procedures are used for the preparation of well-defined molecular samples under vacuum conditions. When the disposition of the axial ligand is unresolved, this potentially hampers a correct interpretation of experimental data. Here, the authors systematically address the axial ligand (X) in the system of FeIII-TriPhenylCorroles (FeTPC)-X with X=NO, 1/2 O, Cl, and (Et2O)2 adsorbed on Cu(111) in a scanning tunneling microscopy study. The authors discuss undesired side effects due to released axial ligands which are coadsorbed on a surface. NO is identified like the most appropriate axial ligand for in situ preparation of uncoordinated FeTPC whereas the adsorption of axially coordinated FeTPC was not observed.Axial ligands play an important role in the stabilization, functionality, and synthesis of many planar organometallic complexes. Axial ligands are often weakly bound and can easily be activated in catalytic reactions. Thermal activation and following dissociation processes have to be considered whenever sublimation procedures are used for the preparation of well-defined molecular samples under vacuum conditions. When the disposition of the axial ligand is unresolved, this potentially hampers a correct interpretation of experimental data. Here, the authors systematically address the axial ligand (X) in the system of FeIII-TriPhenylCorroles (FeTPC)-X with X=NO, 1/2 O, Cl, and (Et2O)2 adsorbed on Cu(111) in a scanning tunneling microscopy study. The authors discuss undesired side effects due to released axial ligands which are coadsorbed on a surface. NO is identified like the most appropriate axial ligand for in situ preparation of uncoordinated FeTPC whereas the adsorption of axially coordinated FeTPC was ...
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