Control of Complex Formation through Peripheral Substituents in Click-Tripodal Ligands: Structural Diversity in Homo- and Heterodinuclear Cobalt-Azido Complexes.
Control of Complex Formation through Peripheral Substituents in Click-Tripodal Ligands: Structural Diversity in Homo- and Heterodinuclear Cobalt-Azido Complexes.
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通过点击三足配体中的外围取代基控制络合物形成:同双核和异双核钴叠氮络合物的结构多样性
DOI:
10.1021/acs.inorgchem.6b02330
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发表时间:
2017
影响因子:
4.6
通讯作者:
B. Sarkar
中科院分区:
文献类型:
--
作者:
M.G. Sommer;R. Marx;D. Schweinfurth;Y. Rechkemmer;P. Neugebauer;M. van der Meer;S. Hohloch;S. Demeshko;F. Meyer;J. van Slageren;B. Sarkar
The azide anion is widely used as a ligand in coordination chemistry. Despite its ubiquitous presence, controlled synthesis of azido complexes remains a challenging task. Making use of click-derived tripodal ligands, we present here various coordination motifs of the azido ligands, the formation of which appears to be controlled by the peripheral substituents on the tripodal ligands with otherwise identical structure of the coordination moieties. Thus, the flexible benzyl substituents on the tripodal ligand TBTA led to the formation of the first example of an unsupported and solely μ1,1-azido-bridged dicobalt(II) complex. The more rigid phenyl substituents on the TPTA ligand deliver an unsupported and solely μ1,3-azido-bridged dicobalt(II) complex. Bulky diisopropylphenyl substituents on the TDTA ligand deliver a doubly μ1,1-azido-bridged dicobalt(II) complex. Intriguingly, the mononuclear copper(II) complex [Cu(TBTA)N3]+is an excellent synthon for generating mixed dinuclear complexes of the form [(TBTA)Co(μ1,1-N3)Cu(TBTA)]3+or [(TBTA)Cu(μ1,1-N3)Cu(TPTA)]3+, both of which contain a single unsupported μ1,1-N3as a bridge. To the best of our knowledge, these are also the first examples of mixed dinuclear complexes with a μ1,1-N3monoazido bridge. All complexes were crystallographically characterized, and selected examples were probed via magnetometry and high-field EPR spectroscopy to elucidate the electronic structures of these complexes and the nature of magnetic coupling in the various azido-bridged complexes. These results thus prove the power of click-tripodal ligands in generating hitherto unknown chemical structures and properties.
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影响因子:
15
作者:
Presolski SI;Hong V;Cho SH;Finn MG
通讯作者:
Finn MG
DOI:
10.1080/15533174.2011.609503
发表时间:
2012
期刊:
Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry
影响因子:
--
作者:
R. Hui;P. Zhou;Z. You
通讯作者:
Z. You
影响因子:
--
作者:
Christophe Orain;N. le Poul;Antoine Gomila;Jean;Nathalie Cosquer;O. Reinaud;F. Conan;Y. Le Mest
通讯作者:
Y. Le Mest
影响因子:
2.3
作者:
David Schweinfurth;S. Demeshko;Michael G. Sommer;S. Dechert;F. Meyer;B. Sarkar
通讯作者:
B. Sarkar
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
Chun;M. Nayak;Ho‐Hsiang Wei;Sasankasekhar Mohanta
通讯作者:
Sasankasekhar Mohanta