Abstract:Polymere mit hemiporphyrazinartiger Struktur wurden durch Reaktion von einigen tetracyanverbindungen, wie z. B. Tetracyanbenzol und schwefelhaltigen Komplexen, die vier Nitrilgruppen enthalten, mit 2.6‐Diaminopyridin und teilweise auch mit p‐Phenylendiamin bei höherer Temperature unter Ammoniakabspaltung hergestellt. Die Struktur der schwarzen, unlöslichen Polymeren wurde durch Elementaranalyse und IR ‐Spektren erschlossen. Die Polymeren zeigen Leitfähigkeiten zwischen 2,3·10−4 und 7,2·10−14 Ohm−1cm−1. Selbstko… Show more
“…Attempts to prepare ladder-type structures in which the Hp subunits are fused to form a double-stranded polymeric chain were reported by Packham 24 and by Wöhrle . They synthesized a number of different polymers from the corresponding tetranitriles and diamines in polycondensation reactions.…”
Section: Synthesismentioning
confidence: 99%
“…Thus, few examples of symmetrical hemiporphyrazines have been described. Among them, compound 42 , ,, bearing two benzene units, has been the most widely studied and was cited in 1954 by Elvidge and Linstead for the first time …”
Section: Other Hemiporphyrazinesmentioning
confidence: 99%
“…A previous work 23 on polymeric hemiporphyrazinatogermanium compounds, although having O−R−O spacers, had already led to extreme low conductivity values (σ RT < 10 -15 S cm -1 ). On the other hand, linear polymerization in hemiporphyrazines and benzenehemiporphyrazines has also led to insulators (σ RT = 10 -8 −10 -16 ) …”
Section: Hemiporphyrazines As Units For Molecular
Organic Materialsmentioning
ContentsI. Introduction 563 II. Synthesis 564 A. Hemiporphyrazines 564 B. Triazolehemiporphyrazines 569 C. Other Hemiporphyrazines 570 III. Molecular Organization of Hemiporphyrazines in Condensed Phases 571 IV. Hemiporphyrazines as Units for Molecular Organic Materials 573 V. Concluding Remarks 574 VI. Acknowledgments 574 VII. References 574
“…Attempts to prepare ladder-type structures in which the Hp subunits are fused to form a double-stranded polymeric chain were reported by Packham 24 and by Wöhrle . They synthesized a number of different polymers from the corresponding tetranitriles and diamines in polycondensation reactions.…”
Section: Synthesismentioning
confidence: 99%
“…Thus, few examples of symmetrical hemiporphyrazines have been described. Among them, compound 42 , ,, bearing two benzene units, has been the most widely studied and was cited in 1954 by Elvidge and Linstead for the first time …”
Section: Other Hemiporphyrazinesmentioning
confidence: 99%
“…A previous work 23 on polymeric hemiporphyrazinatogermanium compounds, although having O−R−O spacers, had already led to extreme low conductivity values (σ RT < 10 -15 S cm -1 ). On the other hand, linear polymerization in hemiporphyrazines and benzenehemiporphyrazines has also led to insulators (σ RT = 10 -8 −10 -16 ) …”
Section: Hemiporphyrazines As Units For Molecular
Organic Materialsmentioning
ContentsI. Introduction 563 II. Synthesis 564 A. Hemiporphyrazines 564 B. Triazolehemiporphyrazines 569 C. Other Hemiporphyrazines 570 III. Molecular Organization of Hemiporphyrazines in Condensed Phases 571 IV. Hemiporphyrazines as Units for Molecular Organic Materials 573 V. Concluding Remarks 574 VI. Acknowledgments 574 VII. References 574
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