Mixed cobalt(III) complexes with aromatic amino acids and diamine. Part IV. Influence of noncovalent intraand interligand interactions on rotamer population of the S-phenylalaninato and S-tyrosinato side groups in (1,2-diaminoethane)bis(S-aminocarboxylato
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Miodragović Đenana U.Milosavljević, Slobodan M.
Malinar, M.J.
Celap, MB
Todorović, Nevena M.
Juranić, N.
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Rotamer population of S-tyrosinato and S-phenylalaninato ligands side groups in diastereomers of (1,2-diaminoethane)bis(S-aminocarboxylato)cobalt(III) complexes is calculated by vicinal alpha and beta proton coupling constant analysis. The effect of noncovalent intra- and interligand interactions on the population of rotamers in D2O solution is discussed. It has been established that in all the complexes investigated the most abundant is rotamer t, in which aromatic voluminous moiety and carboxylic group are in an anti position. In almost all complexes the lowest content is of rotamer g, in which these two groups are in the nearest position. Relatively high population of rotamer b in complex 5 tyr, in spite of high steric hindrances, is due to intra- and interligand NH... pi interactions.
Keywords:
cobalt(III) complex diastereomers / conformational analysis / NMR / NH ... pi interactions / S-phenylalanine / S-tyrosineSource:
Enantiomer, 2002, 7, 6, 375-382Publisher:
- Taylor & Francis Ltd, Abingdon
DOI: 10.1080/10242430215714
ISSN: 1024-2430
PubMed: 12643314
WoS: 000180895200011
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Hemijski fakultet / Faculty of ChemistryTY - JOUR AU - Miodragović Đenana U. AU - Milosavljević, Slobodan M. AU - Malinar, M.J. AU - Celap, MB AU - Todorović, Nevena M. AU - Juranić, N. PY - 2002 UR - https://cherry.chem.bg.ac.rs/handle/123456789/537 AB - Rotamer population of S-tyrosinato and S-phenylalaninato ligands side groups in diastereomers of (1,2-diaminoethane)bis(S-aminocarboxylato)cobalt(III) complexes is calculated by vicinal alpha and beta proton coupling constant analysis. The effect of noncovalent intra- and interligand interactions on the population of rotamers in D2O solution is discussed. It has been established that in all the complexes investigated the most abundant is rotamer t, in which aromatic voluminous moiety and carboxylic group are in an anti position. In almost all complexes the lowest content is of rotamer g, in which these two groups are in the nearest position. Relatively high population of rotamer b in complex 5 tyr, in spite of high steric hindrances, is due to intra- and interligand NH... pi interactions. PB - Taylor & Francis Ltd, Abingdon T2 - Enantiomer T1 - Mixed cobalt(III) complexes with aromatic amino acids and diamine. Part IV. Influence of noncovalent intraand interligand interactions on rotamer population of the S-phenylalaninato and S-tyrosinato side groups in (1,2-diaminoethane)bis(S-aminocarboxylato VL - 7 IS - 6 SP - 375 EP - 382 DO - 10.1080/10242430215714 ER -
@article{ author = "Miodragović Đenana U. and Milosavljević, Slobodan M. and Malinar, M.J. and Celap, MB and Todorović, Nevena M. and Juranić, N.", year = "2002", abstract = "Rotamer population of S-tyrosinato and S-phenylalaninato ligands side groups in diastereomers of (1,2-diaminoethane)bis(S-aminocarboxylato)cobalt(III) complexes is calculated by vicinal alpha and beta proton coupling constant analysis. The effect of noncovalent intra- and interligand interactions on the population of rotamers in D2O solution is discussed. It has been established that in all the complexes investigated the most abundant is rotamer t, in which aromatic voluminous moiety and carboxylic group are in an anti position. In almost all complexes the lowest content is of rotamer g, in which these two groups are in the nearest position. Relatively high population of rotamer b in complex 5 tyr, in spite of high steric hindrances, is due to intra- and interligand NH... pi interactions.", publisher = "Taylor & Francis Ltd, Abingdon", journal = "Enantiomer", title = "Mixed cobalt(III) complexes with aromatic amino acids and diamine. Part IV. Influence of noncovalent intraand interligand interactions on rotamer population of the S-phenylalaninato and S-tyrosinato side groups in (1,2-diaminoethane)bis(S-aminocarboxylato", volume = "7", number = "6", pages = "375-382", doi = "10.1080/10242430215714" }
Miodragović Đenana U., Milosavljević, S. M., Malinar, M.J., Celap, M., Todorović, N. M.,& Juranić, N.. (2002). Mixed cobalt(III) complexes with aromatic amino acids and diamine. Part IV. Influence of noncovalent intraand interligand interactions on rotamer population of the S-phenylalaninato and S-tyrosinato side groups in (1,2-diaminoethane)bis(S-aminocarboxylato. in Enantiomer Taylor & Francis Ltd, Abingdon., 7(6), 375-382. https://doi.org/10.1080/10242430215714
Miodragović Đenana U., Milosavljević SM, Malinar M, Celap M, Todorović NM, Juranić N. Mixed cobalt(III) complexes with aromatic amino acids and diamine. Part IV. Influence of noncovalent intraand interligand interactions on rotamer population of the S-phenylalaninato and S-tyrosinato side groups in (1,2-diaminoethane)bis(S-aminocarboxylato. in Enantiomer. 2002;7(6):375-382. doi:10.1080/10242430215714 .
Miodragović Đenana U., Milosavljević, Slobodan M., Malinar, M.J., Celap, MB, Todorović, Nevena M., Juranić, N., "Mixed cobalt(III) complexes with aromatic amino acids and diamine. Part IV. Influence of noncovalent intraand interligand interactions on rotamer population of the S-phenylalaninato and S-tyrosinato side groups in (1,2-diaminoethane)bis(S-aminocarboxylato" in Enantiomer, 7, no. 6 (2002):375-382, https://doi.org/10.1080/10242430215714 . .