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Interaction of derivatized capped iron(II) porphyrin complexes with CO and O-2

TitleInteraction of derivatized capped iron(II) porphyrin complexes with CO and O-2
Publication TypeJournal Article
Year of Publication1996
AuthorsTang, H, Dolphin, D
JournalInorganic Chemistry
Volume35
Pagination6539-6545
Date PublishedOct
Type of ArticleArticle
ISBN Number0020-1669
KeywordsCARBON-MONOXIDE BINDING, cobalt, CRYSTAL-STRUCTURE, CYCLOPHANE HEMES, DIOXYGEN BINDING, DISTAL POLAR, HEME-PROTEINS, HUMAN OXYHEMOGLOBIN, LIGAND-BINDING, MYOGLOBINS, O2 BINDING
Abstract

{A series of porphyrins strapped and capped by benzene and amidobenzene rings have been prepared. O-2 and CO bindings to their iron(II) complexes have been examined, and the role of hydrogen-bonding in stabilizing O-2 binding has been measured. Each comparison between the benzene ring (no H-bonding) and the amidobenzene ring analogues showed a free energy gain of similar to 1 kcal/mol (at -45 degrees C) for the amidobenzene derivatives. An X-ray structure analysis was carried out for the ferric (Cl-) complex of the benzene-capped porphyrin strapped by two butyl side chains. The crystals were monoclinic, with a = 10.557(3) Angstrom

URL<Go to ISI>://A1996VP44900026