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Volumn 692, Issue , 1998, Pages 30-61

Advances in Single- and Multidimensional NMR Spectroscopy of Paramagnetic Metal Complexes

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EID: 0345761338     PISSN: 00976156     EISSN: None     Source Type: Book Series    
DOI: 10.1021/bk-1998-0692.ch003     Document Type: Article
Times cited : (6)

References (101)
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    • note
    • Note thai this "fast chemical exchange" of the electron spin on the NMR time scale is the opposite of the "slow chemical exchange" of the electron spin on the EPR time scale that gives rise to the two hyperfine lines discussed in the preceding paragraph and shown in Figure 2. In spite of the difference in time scales between EPR and NMR spectroscpy, this "fast" vs. "slow" electron spin relaxation rate is responsible for the rule of thumb that if you see the EPR spectrum of the complex at room temperature, you will not see the NMR spectrum of the same complex at room temperature. However, rules of thumb are meant to be broken, or at least bent, as is the case with certain monomeric, tetrahedral Cu(II) complexes.
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    • note
    • In the case of solvent molecules that remain in the crystals, it is often necessary to pump on the sample extensively on a high vacuum line, and also to evaporate the sample from the deuterated solvent to be used, or preferably both.
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.