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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1002/ejic.202100643
|2 doi
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|a pubmed24n1368.xml
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|a (NLM)34819799
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|a DE-627
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|a eng
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|a Pecak, Jan
|e verfasserin
|4 aut
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|a Synthesis and Characterization of Cobalt NCN Pincer Complexes
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 07.04.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2021 The Authors. European Journal of Inorganic Chemistry published by Wiley-VCH GmbH.
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|a A series of cobalt complexes, stabilized by a monoanionic tridentate NCN pincer ligand, was synthetized and characterized. Preparation of the paramagnetic 15 VE complex [Co(NCNCH2-Et)Br] (1) was accomplished by transmetalation of Li[2,6-(Et2NCH2)2C6H3] with CoBr2 in THF. Treatment of this air-sensitive compound with NO gas resulted in the formation of the diamagnetic Co(III) species [Co(NCNCH2-Et)(NO)Br] (2) as confirmed by X-ray diffraction. This complex features a strongly bent NO ligand (Co-N-O∠135.0°). The νNO is observed at 1609 cm-1 which is typical for a bent metal-N-O arrangement. Coordinatively unsaturated 1 could further be treated with pyridine, isocyanides, phosphines and CO to form five-coordinate 17 VE complexes. Oxidation of 1 with CuBr2 led to the formation of the Co(III) complex [Co(NCNCH2-Et)Br2]. Treatment of [Co(NCNCH2-Et)Br2] with TlBF4 as halide scavenger in acetonitrile led to the formation of the cationic octahedral complex [Co(NCNCH2-Et)(MeCN)3](BF4)2. A combination of X-ray crystallography, IR-, NMR- and EPR-spectroscopy as well as DFT/CAS-SCF calculations were used to characterize all compounds
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|a Journal Article
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|a Cobalt
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|a DFT studies
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|a EPR studies
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|a Nitrosyl ligand
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|a Pincer complexes
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|a Eder, Wolfgang
|e verfasserin
|4 aut
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|a Tomsu, Gerald
|e verfasserin
|4 aut
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|a Stöger, Berthold
|e verfasserin
|4 aut
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|a Pignitter, Marc
|e verfasserin
|4 aut
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| 700 |
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|a Kirchner, Karl
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t European journal of inorganic chemistry
|d 1998
|g 2021(2021), 41 vom: 08. Nov., Seite 4280-4285
|w (DE-627)NLM098272756
|x 1434-1948
|7 nnns
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|g volume:2021
|g year:2021
|g number:41
|g day:08
|g month:11
|g pages:4280-4285
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|u http://dx.doi.org/10.1002/ejic.202100643
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