Orientations of axially coordinated imidazoles and pyridines in crystal structures of model systems of cytochromes
Само за регистроване кориснике
2006
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Many properties of cytochromes and model systems depend on orientations of axial ligands. In this work, we elucidated the role of porphyrin substituents on orientation of axial ligands in model systems of cytochromes. The orientations of axially coordinated imidazoles and pyridines in crystal structures of model systems of cytochromes were analyzed and data were compared with previous quantum-chemical calculations. The results show that eight ethyl groups on porphyrin ring strongly favor parallel orientation, hence, in all these complexes axial ligands, pyridines or imidazoles, are mutually parallel. Four phenyl or mesityl groups at meso-carbons also favor parallel orientation but less strongly. Hence, in most of the bis-imidazole complexes the orientation is parallel, while in bis-pyridine complexes the orientation of pyridines depends on oxidation state of Fe. In bis-pyridine Fe(II) complexes orientation is parallel, in Fe(III) it is orthogonal. This analysis is in agreement with pre...vious quantum-chemical calculations. (C) 2005 Elsevier Inc. All rights reserved.
Кључне речи:
axial ligands / porphyrin / cytochromes / imidazole / pyridineИзвор:
Journal of Inorganic Biochemistry, 2006, 100, 1, 133-142Издавач:
- Elsevier Science Inc, New York
DOI: 10.1016/j.jinorgbio.2005.10.010
ISSN: 0162-0134
PubMed: 16356550
WoS: 000234770200015
Scopus: 2-s2.0-29344472619
Колекције
Институција/група
Hemijski fakultet / Faculty of ChemistryTY - JOUR AU - Rakic, AA AU - Medaković, Vesna AU - Zarić, Snežana D. PY - 2006 UR - https://cherry.chem.bg.ac.rs/handle/123456789/751 AB - Many properties of cytochromes and model systems depend on orientations of axial ligands. In this work, we elucidated the role of porphyrin substituents on orientation of axial ligands in model systems of cytochromes. The orientations of axially coordinated imidazoles and pyridines in crystal structures of model systems of cytochromes were analyzed and data were compared with previous quantum-chemical calculations. The results show that eight ethyl groups on porphyrin ring strongly favor parallel orientation, hence, in all these complexes axial ligands, pyridines or imidazoles, are mutually parallel. Four phenyl or mesityl groups at meso-carbons also favor parallel orientation but less strongly. Hence, in most of the bis-imidazole complexes the orientation is parallel, while in bis-pyridine complexes the orientation of pyridines depends on oxidation state of Fe. In bis-pyridine Fe(II) complexes orientation is parallel, in Fe(III) it is orthogonal. This analysis is in agreement with previous quantum-chemical calculations. (C) 2005 Elsevier Inc. All rights reserved. PB - Elsevier Science Inc, New York T2 - Journal of Inorganic Biochemistry T1 - Orientations of axially coordinated imidazoles and pyridines in crystal structures of model systems of cytochromes VL - 100 IS - 1 SP - 133 EP - 142 DO - 10.1016/j.jinorgbio.2005.10.010 ER -
@article{ author = "Rakic, AA and Medaković, Vesna and Zarić, Snežana D.", year = "2006", abstract = "Many properties of cytochromes and model systems depend on orientations of axial ligands. In this work, we elucidated the role of porphyrin substituents on orientation of axial ligands in model systems of cytochromes. The orientations of axially coordinated imidazoles and pyridines in crystal structures of model systems of cytochromes were analyzed and data were compared with previous quantum-chemical calculations. The results show that eight ethyl groups on porphyrin ring strongly favor parallel orientation, hence, in all these complexes axial ligands, pyridines or imidazoles, are mutually parallel. Four phenyl or mesityl groups at meso-carbons also favor parallel orientation but less strongly. Hence, in most of the bis-imidazole complexes the orientation is parallel, while in bis-pyridine complexes the orientation of pyridines depends on oxidation state of Fe. In bis-pyridine Fe(II) complexes orientation is parallel, in Fe(III) it is orthogonal. This analysis is in agreement with previous quantum-chemical calculations. (C) 2005 Elsevier Inc. All rights reserved.", publisher = "Elsevier Science Inc, New York", journal = "Journal of Inorganic Biochemistry", title = "Orientations of axially coordinated imidazoles and pyridines in crystal structures of model systems of cytochromes", volume = "100", number = "1", pages = "133-142", doi = "10.1016/j.jinorgbio.2005.10.010" }
Rakic, A., Medaković, V.,& Zarić, S. D.. (2006). Orientations of axially coordinated imidazoles and pyridines in crystal structures of model systems of cytochromes. in Journal of Inorganic Biochemistry Elsevier Science Inc, New York., 100(1), 133-142. https://doi.org/10.1016/j.jinorgbio.2005.10.010
Rakic A, Medaković V, Zarić SD. Orientations of axially coordinated imidazoles and pyridines in crystal structures of model systems of cytochromes. in Journal of Inorganic Biochemistry. 2006;100(1):133-142. doi:10.1016/j.jinorgbio.2005.10.010 .
Rakic, AA, Medaković, Vesna, Zarić, Snežana D., "Orientations of axially coordinated imidazoles and pyridines in crystal structures of model systems of cytochromes" in Journal of Inorganic Biochemistry, 100, no. 1 (2006):133-142, https://doi.org/10.1016/j.jinorgbio.2005.10.010 . .