Structural Variation in Porphyrin Pillared Homologous Series: Influence of Distinct Coordination Centers for Pillars on Framework Topology

A new series of porphyrin paddlewheel frameworks (PPFs) has been assembled from 5,10,15,20-tetrakis(4-carboxyl)-21H,23H-porphine (TCPP), Zn(NO3)2·6H2O, and organic pillars such as N,N′-di-(4-pyridyl)-1,4,5,8-naphthalenetetracarboxydiimide (DPNI) and 3,6-di-4-pyridyl-1,2,4,5-tetrazine (DPT). Here we...

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Published inCrystal growth & design Vol. 9; no. 7; pp. 3327 - 3332
Main Authors Chung, Haemi, Barron, Paul M, Novotny, Richard W, Son, Hyun-Tak, Hu, Chunhua, Choe, Wonyoung
Format Journal Article
LanguageEnglish
Published Washington,DC American Chemical Society 01.07.2009
Subjects
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Physics
Structure of solids and liquids; crystallography
Structure of specific crystalline solids
Stacking sequence
Pillared structure
Topology
Pyridyl radicals
Bilayers
Porphyrins
Crystal structure
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Summary:A new series of porphyrin paddlewheel frameworks (PPFs) has been assembled from 5,10,15,20-tetrakis(4-carboxyl)-21H,23H-porphine (TCPP), Zn(NO3)2·6H2O, and organic pillars such as N,N′-di-(4-pyridyl)-1,4,5,8-naphthalenetetracarboxydiimide (DPNI) and 3,6-di-4-pyridyl-1,2,4,5-tetrazine (DPT). Here we report the synthesis and structural characterization of five new PPFs based on 2D porphyrin paddlewheel grid. In this homologous series, the stacking patterns of such 2D porphyrin sheets are varied and exhibit two new structures, namely, bilayer and interpenetrated AA stacking pattern, in addition to the ABBA pattern previously observed.
ISSN:1528-7483
1528-7505
DOI:10.1021/cg900220g