Anomalous 13C NMR chemical shifts of high-spin saddle shaped manganese(III) octaethyltetraphenylporphyrin complexes

Akira Ikezaki; Mikio Nakamura; Ru Jen Cheng

doi:10.1246/cl.2006.156

Anomalous ¹³C NMR chemical shifts of high-spin saddle shaped manganese(III) octaethyltetraphenylporphyrin complexes

Akira Ikezaki, Mikio Nakamura, Ru Jen Cheng

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

7 Citations (Scopus)

Abstract

NMR spectra of highly saddled Mn(III) porphyrinates such as Mn(OETPP)(CD₃OD)₂⁺ have been measured. The extraordinarily upfield shifted meso-¹³C signals, which reach as much as -492 ppm at 298 K, are ascribed to the d_x2-y2-a_2u, d_xy-a_1u, and d_π-3e_g interactions, the former two of which occur only when the porphyrin ring is saddled.

Original language	English
Pages (from-to)	156-157
Number of pages	2
Journal	Chemistry Letters
Volume	35
Issue number	2
DOIs	https://doi.org/10.1246/cl.2006.156
Publication status	Published - 2006 Feb 5
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)

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abstract = "NMR spectra of highly saddled Mn(III) porphyrinates such as Mn(OETPP)(CD3OD)2+ have been measured. The extraordinarily upfield shifted meso-13C signals, which reach as much as -492 ppm at 298 K, are ascribed to the dx2-y2-a2u, dxy-a1u, and dπ-3eg interactions, the former two of which occur only when the porphyrin ring is saddled.",

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AU - Nakamura, Mikio

AU - Cheng, Ru Jen

PY - 2006/2/5

Y1 - 2006/2/5

N2 - NMR spectra of highly saddled Mn(III) porphyrinates such as Mn(OETPP)(CD3OD)2+ have been measured. The extraordinarily upfield shifted meso-13C signals, which reach as much as -492 ppm at 298 K, are ascribed to the dx2-y2-a2u, dxy-a1u, and dπ-3eg interactions, the former two of which occur only when the porphyrin ring is saddled.

AB - NMR spectra of highly saddled Mn(III) porphyrinates such as Mn(OETPP)(CD3OD)2+ have been measured. The extraordinarily upfield shifted meso-13C signals, which reach as much as -492 ppm at 298 K, are ascribed to the dx2-y2-a2u, dxy-a1u, and dπ-3eg interactions, the former two of which occur only when the porphyrin ring is saddled.

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Anomalous ¹³C NMR chemical shifts of high-spin saddle shaped manganese(III) octaethyltetraphenylporphyrin complexes

Abstract

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