Symmetrical Metal Alkoxides and Amides: Reactivity and Structural Studies
Symmetrical Metal Alkoxides and Amides: Reactivity and Structural Studies
批准号:
9224134
负责人:
John Verkade
金额:
$25.5万
依托单位:
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1993
资助国家:
美国
项目状态:
已结题
起止时间:
1993-04-01 至 1997-09-30
中文摘要
爱荷华州立大学的John Verkade教授将在无机、生物无机和有机金属项目的支持下研究“atrane”配位化合物。这些都是高度对称的化合物,具有多环烷氧基和酰胺类配体。一类化合物将金属中心置于带有轴胺的C3V环境中。另一类将类似,但与C2v(准四重)环境。过渡金属和主族金属中心都将使用。最初的研究将集中在这些有趣物种的合成上。Verkade还将对它们的金属迁移、轴向配体位移和其他反应进行机理研究。将采用的一种不寻常的技术是119Sn51V和73Ge核磁共振波谱。Atrans是一类有趣的化合物,其中一个中心金属原子对称地与平面上的三个或四个氧原子结合,而一个氮原子则轴向结合。在这类化合物中,中心金属可以系统地变化,分子的其他特征也可以变化。它们的高度对称性使它们具有高挥发性,这为中心金属原子的运输提供了一种不同寻常的机制。这类化合物的合成以及对其反应性的研究是本赠款的主题。
英文摘要
Professor John Verkade of Iowa State University will investigate "atrane" coordination compounds with support from the Inorganic, Bioinorganic, and Organometallic Program. These are highly symmetrical compounds with polycyclic alkoxide and amide-type ligands. One class of compounds will place the metal center in a C3v environment with an axial amine. The other class will be similar, but with a C2v (quasi-fourfold) environment. Both transition metal and main-group metal centers will be used. The initial studies will focus on synthesis of these interesting species. Verkade will also conduct mechanistic studies of their transmetallations, axial ligand displacements, and other reactions. An unusual technique to be employed will be 119Sn, 51V, and 73Ge NMR spectroscopy. %%% "Atranes" are an interesting class of compounds in which a central metal atom is bound symmetrically to three or four oxygen atoms in a plane, while a nitrogen atom is bound axially. In such compounds the central metal can be systematically varied, as can other features of the molecules. Their high symmetry endows them with high volatility, which provides an unusual mechanism for transporting the central metal atom. The synthesis of such compounds, as well as a study of their reactivity is the subject of the present grant.
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Elucidating the Roles of Structurally Directed Electron Induction and Transannulation in Polycyclic Lewis Base and Lewis Acid Catalysis
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批准号:0750463
-
项目类别:Standard Grant
-
资助金额:$30.8万
-
财政年份:2008
-
负责人:John Verkade
-
依托单位:
New Chemistry of Phosphatrane Bases and of Disilanes
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批准号:9905354
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项目类别:Standard Grant
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资助金额:$30.0万
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财政年份:1999
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负责人:John Verkade
-
依托单位:
Highly Symmetrical Metal Alkoxides and Amines
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批准号:8908136
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项目类别:Continuing Grant
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资助金额:$20.62万
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财政年份:1989
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负责人:John Verkade
-
依托单位:
New Hypervalent and Hypovalent Non-Metal and Metal Systems (Chemistry)
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批准号:8315313
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项目类别:Continuing Grant
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资助金额:$21.12万
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财政年份:1983
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负责人:John Verkade
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依托单位:
Stereoelectronic Effects in Phosphorus Ligands and Novel Hypervalent Non-Metallic Compounds
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批准号:8119407
-
项目类别:Continuing Grant
-
资助金额:$10.48万
-
财政年份:1981
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负责人:John Verkade
-
依托单位:
Travel to Attend: International Union of Pure and Applied Chemistry; Halle, East Germany; Sept. 17-21, 1979
-
批准号:7910766
-
项目类别:Standard Grant
-
资助金额:$0.08万
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财政年份:1979
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负责人:John Verkade
-
依托单位:
Consequences of Orbital Constraints in Organophosphorus Compounds on Ligation
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批准号:7818937
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项目类别:Continuing Grant
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资助金额:$15.27万
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财政年份:1978
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负责人:John Verkade
-
依托单位:
Travel to Attend Arbuzov Memorial Conference on Organic Phosphorus Chemistry, Kiev, Ussr, December 12-16, 1977
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批准号:7725272
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项目类别:Standard Grant
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资助金额:$0.12万
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财政年份:1977
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负责人:John Verkade
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依托单位:
Stereoelectronic Influences in Metallo- and OrganophosphorusCompounds
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批准号:7521340
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项目类别:Continuing Grant
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资助金额:$14.62万
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财政年份:1975
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负责人:John Verkade
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依托单位:
Spectroscopic Studies of Phosphorus-Metal Bonding
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批准号:7001890
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项目类别:Standard Grant
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资助金额:$0.0万
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财政年份:1970
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负责人:John Verkade
-
依托单位:
国内基金
海外基金
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