Low-temperature NMR and IR spectra of photomerocyanine form of spirophenanthrooxazine

Duck Hyung Lee; Myunghee Lee; Chinkap Chung; Weon Hee Lee; In Ja Lee

doi:10.1246/cl.2003.578

Low-temperature NMR and IR spectra of photomerocyanine form of spirophenanthrooxazine

Duck Hyung Lee, Myunghee Lee, Chinkap Chung, Weon Hee Lee, In Ja Lee

School of Forest Sciences and Landscape

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

3 Scopus citations

Abstract

Low-temperature ¹³C NMR and IR spectra of the metastable photomerocyanine (PMC) of spirophenanthrooxazine (SPO) show that PMC is in quinoidal structure. Especially, ¹³C NMR study directly evidences the formation of two quinoidal PMCs in CD₂Cl₂ upon UV irradiation. The quantum chemical study of SPO shows that among open forms TTC and CTC are more stable than TTT and CTT because of the formation of the intramolecular hydrogen bond.

Original language	English
Pages (from-to)	578-579
Number of pages	2
Journal	Chemistry Letters
Volume	32
Issue number	7
DOIs	https://doi.org/10.1246/cl.2003.578
State	Published - 5 Jul 2003

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10.1246/cl.2003.578

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title = "Low-temperature NMR and IR spectra of photomerocyanine form of spirophenanthrooxazine",

abstract = "Low-temperature 13C NMR and IR spectra of the metastable photomerocyanine (PMC) of spirophenanthrooxazine (SPO) show that PMC is in quinoidal structure. Especially, 13C NMR study directly evidences the formation of two quinoidal PMCs in CD2Cl2 upon UV irradiation. The quantum chemical study of SPO shows that among open forms TTC and CTC are more stable than TTT and CTT because of the formation of the intramolecular hydrogen bond.",

author = "Lee, {Duck Hyung} and Myunghee Lee and Chinkap Chung and Lee, {Weon Hee} and Lee, {In Ja}",

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T1 - Low-temperature NMR and IR spectra of photomerocyanine form of spirophenanthrooxazine

AU - Lee, Duck Hyung

AU - Lee, Myunghee

AU - Chung, Chinkap

AU - Lee, Weon Hee

AU - Lee, In Ja

PY - 2003/7/5

Y1 - 2003/7/5

N2 - Low-temperature 13C NMR and IR spectra of the metastable photomerocyanine (PMC) of spirophenanthrooxazine (SPO) show that PMC is in quinoidal structure. Especially, 13C NMR study directly evidences the formation of two quinoidal PMCs in CD2Cl2 upon UV irradiation. The quantum chemical study of SPO shows that among open forms TTC and CTC are more stable than TTT and CTT because of the formation of the intramolecular hydrogen bond.

AB - Low-temperature 13C NMR and IR spectra of the metastable photomerocyanine (PMC) of spirophenanthrooxazine (SPO) show that PMC is in quinoidal structure. Especially, 13C NMR study directly evidences the formation of two quinoidal PMCs in CD2Cl2 upon UV irradiation. The quantum chemical study of SPO shows that among open forms TTC and CTC are more stable than TTT and CTT because of the formation of the intramolecular hydrogen bond.

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U2 - 10.1246/cl.2003.578

DO - 10.1246/cl.2003.578

M3 - Article

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VL - 32

SP - 578

EP - 579

JO - Chemistry Letters

JF - Chemistry Letters

IS - 7

ER -

Low-temperature NMR and IR spectra of photomerocyanine form of spirophenanthrooxazine

Abstract

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