Bond Dissociation Energies of Metallo-supramolecular Building Blocks: Insight from Fragmentation of Selectively Self-Assembled Heterometallic Metallo-supramolecular Aggregates.
Bond Dissociation Energies of Metallo-supramolecular Building Blocks: Insight from Fragmentation of Selectively Self-Assembled Heterometallic Metallo-supramolecular Aggregates.
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金属超分子构件的键解离能：选择性自组装异金属金属超分子聚集体断裂的见解
DOI：
10.1021/acs.inorgchem.8b00930
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发表时间：
2018
影响因子：
4.6
通讯作者：
M. Engeser
中科院分区：
文献类型：
--
作者：
Y. Lorenz;A. Gutiérrez;M. Ferrer;M. Engeser
一系列选择性自组装的金属-超分子方型大环，具有不对称的双配位连接基和两种不同类型的金属角，即，{Pd(本文用碰撞诱导解离方法研究了气相中η3-2-Me-C_3 H_4）}和{M（dppp）}（其中dppp = 1，3-双（二苯基膦基）丙烷，M = Pd ~（2+）或Pt ~（2+））。聚集体显示出不同的碎片模式由配体长度，即聚集体的大小，和类型的金属角。可以推导出关于相对结合强度的信息。这是特别感兴趣的（甲基烯丙基）钯作为一个相对较新的建筑块在金属超分子化学。与（η3-2-Me-C3 H4）Pd连接的不对称配体的膦烷端比其吡啶端与（dppp）Pt和（dppp）Pd的结合明显更强。这些结果得到了DFT计算的证实。
A series of selectively self-assembled metallo-supramolecular square-like macrocycles with unsymmetric ditopic linkers and two different types of metal corners, i.e., {Pd(η3-2-Me-C3H4)} and {M(dppp)} with dppp = 1,3-bis(diphenylphosphino)propane and M = Pd2+or Pt2+, have been studied in the gas phase using collision-induced dissociation. The aggregates show distinct fragmentation patterns determined by ligand length, i.e, aggregate size, and type of metal corner. Information on relative binding strength can be deduced. This is of particular interest for (methylallyl)Pd as a relatively new building block in metallo-supramolecular chemistry. The phosphane end of the unsymmetric ligand connected to (η3-2-Me-C3H4)Pd is bound significantly stronger than its pyridine end to (dppp)Pt and (dppp)Pd. These results are corroborated by DFT calculations.