1998 Fiscal Year Final Research Report Summary
Synthesis of core-carbon substituted N-Confused porphyrin
| Project/Area Number |
09640642
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Organic chemistry
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
FURUTA Hiroyuki Kyoto University, GradSchool.Sci.Associate Professor., 大学院・理学研究科, 助教授 (40244157)
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| Project Period (FY) |
1997 – 1998
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| Keywords | N-Confused Porphyrin / N-Fused Porphyrin / Silver(III) Complex / porphyrin isomer |
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| Research Abstract |
The introduction of substituents such as halogens and metals at the inner carbon of N-Confused porphyrin (NCP) was investigated.
When NBS was used, selective bromination at the inner carbon of NCP was observed. This brominated NCP was spontaneously transformed into new porphyrinoid having a longwavelength absorption near 1000 nm while kept in pyridine. The structure of new compound, N-Fused Porphyrin (NEP), was characterized by x-ray single crystal diffraction. NFP contains a hilstan-like tricyclic penta ring, which derived from reinversion of inverted pyrrole ring and oxidative coupling to an adjacent pyrrole ring in the core. Furthermore, treatment of NFP with base gave starting NCP again.
When NCP was metalated with Pd(II) or Ag(I), a square planar tetracoordinated NCP-metal complex was obtained. By magnetic susceptibility measurements, electrochemical study, and x-ray structural analyses, diamagnetic Pd(II) or Ag(III) complex was found formed. The multi ligand valence (-2 and -3) of NCP ligand was demonstrated
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