New discrete and polymeric supramolecular architectures derived from dinuclear Co(II), Ni(II) and Cu(II) complexes of aryl-linked bis-beta-diketonato ligands and nitrogen bases: synthetic, structural and high pressure studies.

New discrete and polymeric supramolecular architectures derived from dinuclear Co(II), Ni(II) and Cu(II) complexes of aryl-linked bis-beta-diketonato ligands and nitrogen bases: synthetic, structural and high pressure studies.
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源自芳基连接的双-β-二酮配体和氮碱的双核 Co(II)、Ni(II) 和 Cu(II) 配合物的新型离散和聚合超分子结构:合成、结构和高压研究。

DOI:
10.1039/b920199h
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发表时间:
2010
期刊:
2003)
影响因子:
--
通讯作者:
Clegg JK
Clegg JK
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文献类型:
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作者:
Clegg JK

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双核Co(II)、Ni(II)和Cu(II)配合物的氮碱加合物的新实例,所述双核Co(II)、Ni(II)和Cu(II)配合物为双去质子化形式的[RC(O)CH 2C(O)C6 H 4C(O)CH 2C(O)R](L1 H2)型的1,3-芳基连接的双-β-二酮,其掺入单官能和双官能胺碱吡啶(Py)、4-乙基吡啶(EtPy)、哌啶(pipi)、1,4-哌嗪(pip)、N-甲基吗啉(mmorph),通过[Cu_2(L_1)_2]·2.5THF(R = Me)、[Cu_2(L_1)_2(THF)_2](R = t-Bu)、[Ni_2(L_1)_2(Py)_4](R = t-Bu)和[Co_2(L_1)_2(Py)_4](R = t-Bu)配合物与上述类型的碱反应,合成了1,4-二甲基哌嗪(dmpip)和N,N,N′,N′-四甲基乙二胺(tmen)。比较X-射线结构研究,涉及所有10个碱加合物衍生物已经获得,并揭示了一系列有趣的离散和聚合物的分子结构。各产品具有以下化学计量:[Cu2(L1)2(Py)2]·Py(R = Me),[Cu2(L1)2(EtPy)2]·2EtPy(R = t-Bu),[Cu2(L1)2(pipi)2]·2pipi(R = t-Bu),[Cu2(L1)2(mmorph)2](R = t-Bu),[Cu2(L1)2(tmen)2](R = t-Bu)和{[Cu 2(L1)2(pip)]·pip·2THF}n,[Co 2(L1)2(tmen)2](R = t-Bu)、[Ni2(L1)2(Py)4]·dmpip(R = t-Bu)、[Ni2(L1)2(pipi)4]·pipi(R = t-Bu)和[Ni2(L1)2(tmen)2](R = t-Bu)。本文研究了压力对[Cu_2(L_1)_2(mmorph)_2] X射线结构的影响。压力从环境压力增加到9.1千巴导致晶胞参数适度变化,晶胞体积相应减少6.7%。虽然在整个晶格中相邻的分子单元之间发生小的“剪切”运动,但没有现有的键被破坏或形成新的键。
New examples of nitrogen base adducts of dinuclear Co(II), Ni(II) and Cu(II) complexes of the doubly deprotonated forms of 1,3-aryl linked bis-β-diketones of type [RC(O)CH2C(O)C6H4C(O)CH2C(O)R] (L1H2) incorporating the mono- and difunctional amine bases pyridine (Py), 4-ethylpyridine (EtPy), piperidine (pipi), 1,4-piperazine (pip), N-methylmorpholine (mmorph), 1,4-dimethylpiperazine (dmpip) and N,N,N′,N′-tetramethylethylenediamine (tmen) have been synthesised by reaction of the previously reported [Cu2(L1)2]·2.5THF (R = Me), [Cu2(L1)2(THF)2] (R = t-Bu), [Ni2(L1)2(Py)4] (R = t-Bu) and [Co2(L1)2(Py)4] (R = t-Bu) complexes with individual bases of the above type. Comparative X-ray structural studies involving all ten base adduct derivatives have been obtained and reveal a range of interesting discrete and polymeric molecular architectures. The respective products have the following stoichiometries: [Cu2(L1)2(Py)2]·Py (R = Me), [Cu2(L1)2(EtPy)2]·2EtPy (R = t-Bu), [Cu2(L1)2(pipi)2]·2pipi (R = t-Bu), [Cu2(L1)2(mmorph)2] (R = t-Bu), [Cu2(L1)2(tmen)2] (R = t-Bu) and {[Cu2(L1)2(pip)]·pip·2THF}n, [Co2(L1)2(tmen)2] (R = t-Bu), [Ni2(L1)2(Py)4]·dmpip (R = t-Bu), [Ni2(L1)2(pipi)4]·pipi (R = t-Bu) and [Ni2(L1)2(tmen)2] (R = t-Bu). The effect of pressure on the X-ray structure of [Cu2(L1)2(mmorph)2] has been investigated. An increase in pressure from ambient to 9.1 kbar resulted in modest changes to the unit cell parameters as well as a corresponding decrease of 6.7 percent in the unit cell volume. While a small ‘shearing’ motion occurs between adjacent molecular units throughout the lattice, no existing bonds are broken or new bonds formed.
通过非对映选择性自组装由手性双 1,3-二酮 H2L 生成对映体纯铜 (II) 古巴烷 [Cu4L2(OMe)4]。
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