Synthesis and Structure of Tetradentate Nitrogen Ligands and Linear Tetranuclear Metal-Chain Complexes
碩士 === 國立臺灣大學 === 化學系研究所 === 86 === Linear multi-nuclear metal chain complexes are highly interested both in metal -metal bond theory and potential application as a molecular metalwire. Several linear tri- and penta-nuclear metal chain complexes have been synthesized s...
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ndltd-TW-086NTU000650342016-06-29T04:13:36Z http://ndltd.ncl.edu.tw/handle/21411715231419476385 Synthesis and Structure of Tetradentate Nitrogen Ligands and Linear Tetranuclear Metal-Chain Complexes 四氮配基及其直線型四核金屬串錯合物之合成 Lin, Tzu-Wei 林子偉 碩士 國立臺灣大學 化學系研究所 86 Linear multi-nuclear metal chain complexes are highly interested both in metal -metal bond theory and potential application as a molecular metalwire. Several linear tri- and penta-nuclear metal chain complexes have been synthesized suc h as nickel, cobalt, and chromium ...etc. In these "odd"-multi-nuclear metal c hain complexes, the metal chain is helically surrounded by four organic ligand s to perform a wire-like structure and there are axial ligands in the both ter minal of 6m. metal chain. The interaction between metals is affected by the ax ial ligands. The properties of complexes with different axial ligands have bee n studied. However there is no reports about synthesizing metal chain complexe s of "even"-multi-nuclear system, such as tetra- or hexa-nuclear metal chain c omplexes.The aim of this thesis is the synthesis of tetra-nuclear metal chain complexes. In the beginning, several tetradentate nitrogen bridged ligands wer e synthesized then the proper one was choosed. The tetranuclear metal chain Ni II complex [Ni4((4-ph-dpda)4] was synthesized successfully with the ligand N-p henyl-dipyridyldiamine named as H2ph-dpda. Various spectroscopic methods, in p articular mass spectrometry (FAB), and X-ray diffraction were applied to chara cterize this complex. The tetranuclear NiII chain is helically surrounded by f our ph-dpda anion ligands and there is no axial ligand in this complex. In [Ni4((4-ph-dpda)4] complex, the distances of Ni-Ni are equal to 2.30 A and of Ni-N are equal to 1.91 A which consist with the characterstic bond lengths of low spin NiII. This complex was proposed to be diamagnetic. It is noticeble that the tetranuclear NiII complex will convert to trinuclear NiII complex in the solution, which contains chloro-solvent. Peng, Shie-Ming 彭旭明 --- 1998 學位論文 ; thesis 170 zh-TW |
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碩士 === 國立臺灣大學 === 化學系研究所 === 86 === Linear multi-nuclear metal chain complexes are highly interested both in metal
-metal bond theory and potential application as a molecular metalwire. Several
linear tri- and penta-nuclear metal chain complexes have been synthesized suc
h as nickel, cobalt, and chromium ...etc. In these "odd"-multi-nuclear metal c
hain complexes, the metal chain is helically surrounded by four organic ligand
s to perform a wire-like structure and there are axial ligands in the both ter
minal of 6m. metal chain. The interaction between metals is affected by the ax
ial ligands. The properties of complexes with different axial ligands have bee
n studied. However there is no reports about synthesizing metal chain complexe
s of "even"-multi-nuclear system, such as tetra- or hexa-nuclear metal chain c
omplexes.The aim of this thesis is the synthesis of tetra-nuclear metal chain
complexes. In the beginning, several tetradentate nitrogen bridged ligands wer
e synthesized then the proper one was choosed. The tetranuclear metal chain Ni
II complex [Ni4((4-ph-dpda)4] was synthesized successfully with the ligand N-p
henyl-dipyridyldiamine named as H2ph-dpda. Various spectroscopic methods, in p
articular mass spectrometry (FAB), and X-ray diffraction were applied to chara
cterize this complex. The tetranuclear NiII chain is helically surrounded by f
our ph-dpda anion ligands and there is no axial ligand in this complex.
In [Ni4((4-ph-dpda)4] complex, the distances of Ni-Ni are equal to 2.30 A and
of Ni-N are equal to 1.91 A which consist with the characterstic bond lengths
of low spin NiII. This complex was proposed to be diamagnetic. It is noticeble
that the tetranuclear NiII complex will convert to trinuclear NiII complex in
the solution, which contains chloro-solvent.
|
author2 |
Peng, Shie-Ming |
author_facet |
Peng, Shie-Ming Lin, Tzu-Wei 林子偉 |
author |
Lin, Tzu-Wei 林子偉 |
spellingShingle |
Lin, Tzu-Wei 林子偉 Synthesis and Structure of Tetradentate Nitrogen Ligands and Linear Tetranuclear Metal-Chain Complexes |
author_sort |
Lin, Tzu-Wei |
title |
Synthesis and Structure of Tetradentate Nitrogen Ligands and Linear Tetranuclear Metal-Chain Complexes |
title_short |
Synthesis and Structure of Tetradentate Nitrogen Ligands and Linear Tetranuclear Metal-Chain Complexes |
title_full |
Synthesis and Structure of Tetradentate Nitrogen Ligands and Linear Tetranuclear Metal-Chain Complexes |
title_fullStr |
Synthesis and Structure of Tetradentate Nitrogen Ligands and Linear Tetranuclear Metal-Chain Complexes |
title_full_unstemmed |
Synthesis and Structure of Tetradentate Nitrogen Ligands and Linear Tetranuclear Metal-Chain Complexes |
title_sort |
synthesis and structure of tetradentate nitrogen ligands and linear tetranuclear metal-chain complexes |
publishDate |
1998 |
url |
http://ndltd.ncl.edu.tw/handle/21411715231419476385 |
work_keys_str_mv |
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