Diastereoselective Axial-to-Chelate-Puckering Chirality Transfer in cis-[PtCl2(DABN)] Complexes
- 1Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
- 2Departamento de Química Inorgánica, Instituto de Nanociencia y Materiales de Aragón (INMA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
Abstract
Axially chiral 1,1′-binaphthalene-2,2′-diamine (DABN) was used to control chelate-ring puckering in cis-[PtCl2(DABN)] complexes. Coordination of R a- or S a-DABN affords the enantiomeric complexes cis-λ-[PtCl2(R
a -DABN)] (λ,R
a -1) and cis-δ-[PtCl2(S
a -DABN)] (δ,S
a -1), respectively, with no evidence for mismatched diastereomers. X-ray crystallography shows that axial ligand chirality is translated into a configurationally locked λ or δ pucker of the seven-membered metallacycle. NMR spectroscopy supports retention of the structure in CD3CN, whereas kinetic studies in DMSO-d 6 reveal pseudo-first-order DABN displacement by solvent. The enantiomeric complexes display intense mirror-image CD spectra, highlighting DABN as an effective axial chirality source for axial-to-chelate-puckering chirality transfer.
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BibTeX
@article{maluenda2026diastereoselective,
title = {{Diastereoselective Axial-to-Chelate-Puckering Chirality Transfer in cis-[PtCl2(DABN)] Complexes}},
author = {Andrea Maluenda and Tamara Bolaño and Pablo J. Sanz Miguel},
journal = {Inorganic Chemistry},
year = {2026},
month = sep,
doi = {10.1021/acs.inorgchem.6c03354},
url = {https://doi.org/10.1021/acs.inorgchem.6c03354},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Diastereoselective Axial-to-Chelate-Puckering Chirality Transfer in cis-[PtCl2(DABN)] Complexes
AU - Andrea Maluenda
AU - Tamara Bolaño
AU - Pablo J. Sanz Miguel
PY - 2026
DA - 2026/09/09
JO - Inorganic Chemistry
DO - 10.1021/acs.inorgchem.6c03354
UR - https://doi.org/10.1021/acs.inorgchem.6c03354
AB - Axially chiral 1,1′-binaphthalene-2,2′-diamine (DABN) was used to control chelate-ring puckering in cis-[PtCl2(DABN)] complexes. Coordination of R a- or S a-DABN affords the enantiomeric complexes cis-λ-[PtCl2(R a -DABN)] (λ,R a -1) and cis-δ-[PtCl2(S a -DABN)] (δ,S a -1), respectively, with no evidence for mismatched diastereomers. X-ray crystallography shows that axial ligand chirality is translated into a configurationally locked λ or δ pucker of the seven-membered metallacycle. NMR spectroscopy supports retention of the structure in CD3CN, whereas kinetic studies in DMSO-d 6 reveal pseudo-first-order DABN displacement by solvent. The enantiomeric complexes display intense mirror-image CD spectra, highlighting DABN as an effective axial chirality source for axial-to-chelate-puckering chirality transfer.
SN - 0020-1669
SN - 1520-510X
ER -