The Missing Link: Manganese Complexes with Sterically Demanding Pyrrolyl Ligands
The Missing Link: Manganese Complexes with Sterically Demanding Pyrrolyl Ligands
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缺失的环节:具有空间要求的吡咯基配体的锰络合物
DOI:
10.1002/zaac.201500555
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
M. D. Walter
中科院分区:
文献类型:
--
作者:
M. Kreye;M. Freytag;C. G. Daniliuc;P. G. Jones;M. D. Walter
Reaction of NaPyrtBu2[PyrtBu2= 2, 5‐(Me3C)2C4H2N] and KPyrtBu2Me2[PyrtBu2Me2= 2, 5‐(Me3C)2‐3, 4‐Me2C4N] with MnI2(thf)3resulted in the isolation of the first bis(pyrrolyl)manganese(II) complexes. However, different coordination modes are realized depending on the identity of the Pyr‐ligand. For example, the MnIIatom is κNcoordinate in [(κN‐PyrtBu2)2Mn] (1‐Mn), whereas several different species were isolated with the more bulky PyrtBu2Me2ligand. Depending on the reaction conditions the κN‐coordinate complex [(κN‐PyrtBu2Me2)2Mn] (2‐Mn′) is initially formed, but converts on sublimation to the η3coordinate isomer [(η3‐PyrtBu2Me2)2Mn] (2‐Mn′). In some cases we could also identify a THF adduct of2‐Mnto give [(κN‐PyrtBu2Me2)(η2‐PyrtBu2Me2)Mn(thf)] [2‐Mn(thf)], in which one PyrtBu2Me2ligand binds in a κNcoordination mode, while the other is best described as η2‐PyrtBu2Me2. These complexes were characterized by elemental analyses and X‐ray diffraction studies. Density functional theory (DFT) computations confirm that the potential energy surface between the different hapticities is rather flat for these MnIIhigh‐spin species (S= 5/2).
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DOI:
10.1002/cber.19831160337
发表时间:
1983
期刊:
Chemische Berichte
影响因子:
--
作者:
F. Köhler;Nikolaus Hebendanz
通讯作者:
Nikolaus Hebendanz
DOI:
10.1515/znb-1988-0208
发表时间:
1988
期刊:
Zeitschrift für Naturforschung B
影响因子:
--
作者:
P. Stolz;S. Pohl
通讯作者:
S. Pohl
DOI:
10.1002/cber.19931261215
发表时间:
1993
期刊:
Chemische Berichte
影响因子:
--
作者:
H. Schumann;J. Winterfeld;Holger Hemling;N. Kuhn
通讯作者:
N. Kuhn
影响因子:
15
作者:
D. L. Kershner;F. Basolo
通讯作者:
F. Basolo
DOI:
--
发表时间:
1990
期刊:
影响因子:
--
作者:
N. Kuhn;Eva‐Maria Horn
通讯作者:
Eva‐Maria Horn