Temperature dependence of low field CIDNP and time resolved SNP in cyclic ketones

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Temperature dependence of low field CIDNP and time resolved SNP in cyclic ketones. / Dvinskikh, S. V.; Egorov, A. V.; Vieth, H. M.

In: Applied Magnetic Resonance, Vol. 12, No. 4, 01.01.1997, p. 465-476.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{b828911b8bda4218aeff0188fb50cff1,

title = "Temperature dependence of low field CIDNP and time resolved SNP in cyclic ketones",

abstract = "1H CIDNP and time resolved Stimulated Nuclear Polarization (SNP) in the photolysis of 2,2,12,12-tetramethylcyclododecanone have been investigated at low magnetic field in the temperature range from -70 to +90°C. Considerable differences for protons of different reaction products are seen in the CIDNP field dependences and SNP decay times at high temperatures. For disproportion products of acyl-alkyl biradicals the width of the CIDNP field dependence and the position of the emission maximum exhibit a pronounced temperature dependence with the largest shift towards low field around -30°C. At lower temperatures a significant slowing down of the SNP decay is observed. The results are discussed in terms of a superposition of contributions from acyl-alkyl and bis(alkyl) biradicals to the nuclear spin polarization.",

author = "Dvinskikh, {S. V.} and Egorov, {A. V.} and Vieth, {H. M.}",

year = "1997",

month = jan,

day = "1",

doi = "10.1007/BF03164127",

language = "English",

volume = "12",

pages = "465--476",

journal = "Applied Magnetic Resonance",

issn = "0937-9347",

publisher = "Springer Nature",

number = "4",

}

RIS

TY - JOUR

T1 - Temperature dependence of low field CIDNP and time resolved SNP in cyclic ketones

AU - Dvinskikh, S. V.

AU - Egorov, A. V.

AU - Vieth, H. M.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - 1H CIDNP and time resolved Stimulated Nuclear Polarization (SNP) in the photolysis of 2,2,12,12-tetramethylcyclododecanone have been investigated at low magnetic field in the temperature range from -70 to +90°C. Considerable differences for protons of different reaction products are seen in the CIDNP field dependences and SNP decay times at high temperatures. For disproportion products of acyl-alkyl biradicals the width of the CIDNP field dependence and the position of the emission maximum exhibit a pronounced temperature dependence with the largest shift towards low field around -30°C. At lower temperatures a significant slowing down of the SNP decay is observed. The results are discussed in terms of a superposition of contributions from acyl-alkyl and bis(alkyl) biradicals to the nuclear spin polarization.

AB - 1H CIDNP and time resolved Stimulated Nuclear Polarization (SNP) in the photolysis of 2,2,12,12-tetramethylcyclododecanone have been investigated at low magnetic field in the temperature range from -70 to +90°C. Considerable differences for protons of different reaction products are seen in the CIDNP field dependences and SNP decay times at high temperatures. For disproportion products of acyl-alkyl biradicals the width of the CIDNP field dependence and the position of the emission maximum exhibit a pronounced temperature dependence with the largest shift towards low field around -30°C. At lower temperatures a significant slowing down of the SNP decay is observed. The results are discussed in terms of a superposition of contributions from acyl-alkyl and bis(alkyl) biradicals to the nuclear spin polarization.

UR - http://www.scopus.com/inward/record.url?scp=0031490054&partnerID=8YFLogxK

U2 - 10.1007/BF03164127

DO - 10.1007/BF03164127

M3 - Article

AN - SCOPUS:0031490054

VL - 12

SP - 465

EP - 476

JO - Applied Magnetic Resonance

JF - Applied Magnetic Resonance

SN - 0937-9347

IS - 4

ER -

ID: 48947350