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18844446428
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note
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[10] However, neither precise details of the reaction conditions and yields nor spectroscopic data were provided; the major interest in ref. [10] was the reaction kinetics. Further, we note that the reported melting points of the isolated solid (120-121°C) and its mono-2,4-dinitrophenylhydrazone (185-187°C) are close to the corresponding values of para-benzoquinone and its hydrazone derivative, respectively (115°C and 186°C, respectively). Several attempts in our laboratory to reproduce the reported procedure failed and instead led to iodoresorcinols as well as phenol-coupling products; para-benzoquinone was not even detected as a by-product.
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17
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18844377161
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note
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2 (80% T) and the deflector was grounded. Usually 10-50 scans were averaged to improve the signal-to-noise ratio, and the final data were derived from two to six independent measurements.
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21
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18844381851
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note
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ZPV.
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23
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0345491105
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b) C. Lee, W. Yang, R. G. Parr, Phys. Rev. B 1988, 37, 785;
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29
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0004024840
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R. G. Cooks, J. H. Beynon, R. M. Caprioli, G. R. Lester, Metastable Ions, Elsevier, Amsterdam, 1973.
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Metastable Ions
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Cooks, R.G.1
Beynon, J.H.2
Caprioli, R.M.3
Lester, G.R.4
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30
-
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18844422444
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note
-
3-resorcinol (< 4%).
-
-
-
-
31
-
-
18844435153
-
-
note
-
•-, rather than ring-deprotonated forms.
-
-
-
-
32
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18844444488
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-
note
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[2] The authors claim generation of 75% of desired meta-xylylene and 25% of anions with one of the hydrogen atoms eliminated from the ring.
-
-
-
-
33
-
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18844443957
-
-
note
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•- ions.
-
-
-
-
34
-
-
18844399105
-
-
note
-
2 state should be taken with some caution because the description of an open-shell singlet state with single reference methods, like B3LYP, inevitably encounters spin-contamination by the triplet state.
-
-
-
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35
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0033473720
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