ISSN:
1572-8870
Keywords:
Porphyrinato metal polymers
;
iron(II) complexes
;
isocyanide ligands
;
nuclear magnetic resonance spectroscopy
;
Mößbauer spectroscopy
;
57Fe
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The use of (tetrakis(4-hexylphenyl)porphyrinato)Fe(II) in polymerization reactions with bidentate ligands such as 9,10-diisocyanoanthracene and 1,4-diisocyanobenzene led to well-defined stacked polymers1 and2 which are still soluble in common organic solvents such as chloroform, dichloromethane, and tetrahydrofurane. They have been completely characterized by1H-NMR and UV/vis spectropscopy in solution, even allowing end-group analysis for determination of the average degree of polymerization, yieldingn=10 andn=5 for1 and2, respectively. Mößbauer and IR spectroscopy further established the strong Fe-CN bonding reflected by very small isomer shifts and quadrupole splittings (ΔE Q∼0.2 mm s−1) and a large decrease in the IR stretching frequency (Δv CN∼60 cm−1). The axially stacked polymers exhibit semiconducting properties only upon doping.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00683717
