1
|
Wang C, Xu L, Rao Y, Yin B, Zhou M, Song J, Osuka A. Di(p-dibenzi)[40]decaphyrin(1.0.0.0.0.1.0.0.0.0) Pd II Complex: A Weakly Hückel 38π-Aromatic Macrocycle. Chem Asian J 2024; 19:e202300923. [PMID: 37985417 DOI: 10.1002/asia.202300923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/18/2023] [Accepted: 11/20/2023] [Indexed: 11/22/2023]
Abstract
Di(p-benzi)[40]decaphyrin(1.0.0.0.0.1.0.0.0.0) BF2 complex and tris(p-benzi)[60]pentadecaphyrin(1.0.0.0.0.1.0.0.0.0.1.0.0.0.0) BF2 complex were synthesized by Suzuki-Miyaura coupling of α,α'-diborylated tetrapyrrole BF2 -complex with 1,4-diiodobenzene. Bis-BF2 complex was converted to bis-PdII complex via its free base. Macrocycles bis-BF2 and tris-BF2 complex take Möbius topology but are nonaromatic, since the macrocyclic conjugation is disrupted by the locally aromatic 1,4-phenylene units. In contrast, bis-PdII complex is a weakly Hückel 38π-aromatic macrocycle as evinced by its red-shifted, enhanced, and structured Q-like bands and a small electrochemical HOMO-LUMO gap. Interestingly, one 1,4-pheylene part of bis-PdII complex takes a quinonoidal distorted structure and the other takes a usual benzene structure in a figure-eight conformation with Hückel topology.
Collapse
Affiliation(s)
- Chengwei Wang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Ling Xu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Yutao Rao
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Bangshao Yin
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Mingbo Zhou
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Jianxin Song
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Atsuhiro Osuka
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| |
Collapse
|
2
|
Han P, Han M, Sessler JL, Lei C. Resolution of Expanded Porphyrinoids: A Path to Persistent Chirality and Appealing Chiroptical Properties. Chemistry 2023; 29:e202303058. [PMID: 37851869 DOI: 10.1002/chem.202303058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 10/20/2023]
Abstract
Chirality is a fundamental characteristic of nature. Expanded porphyrinoids and their analogues offer an attractive platform for delving into the intricacies of chirality. Expanded porphyrinoids comprise pyrrolic macrocycles and related heterocyclic systems. As a class, expanded porphyrinoids are widely recognized for their flexible structural features, nontrivial coordination capabilities, and intriguing optical and electronic properties. With limited exceptions, their inherent conformational flexibility coupled with a low racemization barrier allows for the facile interchange between enantiomers. As a result, achieving the effective chiral resolution of individual enantiomers and the subsequent exploration of their chiroptical properties represents a significant challenge. This review summarizes strategies used to realize the chiral resolution of expanded porphyrinoids and the understanding of intrinsic chiroptical properties that has emerged from these separation efforts. It is our hope that this review will serve not only to codify our current understanding of chiral expanded porphyrinoids, but also inspire advances in the generalized area of chiral functional materials.
Collapse
Affiliation(s)
- Puren Han
- Department of Physics, College of Sciences, Shanghai University, Shanghai, 200444, P. R. China
- Center for Supramolecular Chemistry and Catalysis Department of Chemistry, College of Science, Shanghai University, Shanghai, 200444, P. R. China
| | - Mutian Han
- Center for Supramolecular Chemistry and Catalysis Department of Chemistry, College of Science, Shanghai University, Shanghai, 200444, P. R. China
| | - Jonathan L Sessler
- Department of Chemistry, The University of Texas at Austin, 105 East 24th Street, Stop A5300, Austin, Texas, 78712-1224, USA
| | - Chuanhu Lei
- Center for Supramolecular Chemistry and Catalysis Department of Chemistry, College of Science, Shanghai University, Shanghai, 200444, P. R. China
| |
Collapse
|
3
|
Chen H, Lei Y, Xu Y, Shao M, Duan Z, Lei C. Phenanthrene-Incorporated Isoamethyrin: A Near-Planar Macrocycle That Display Enhanced Aromaticity via Protonation-Triggered Conformation Changes. J Org Chem 2023; 88:11352-11357. [PMID: 37458445 DOI: 10.1021/acs.joc.3c01098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
Controlling the aromaticity in expanded porphyrins is a forefront research topic, and the strategy of using protonation-triggered conformational changes to fine-tune electronic properties and aromaticity has yet to be generalized in rigid and planar expanded porphyrins. Here, we synthesized phenanthrene-incorporated isoamethyrins that possess near-planar conformations and nonaromatic characters. However, when methanesulfonic acid (MSA) was added, geometric deformations occurred to minimize the unfavorable strain, resulting in macrocycles that were weakly aromatic as a whole.
Collapse
Affiliation(s)
- Hao Chen
- Department of Physics, College of Sciences, Shanghai University, Shanghai 200444, P.R. China
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, P.R. China
| | - Yajuan Lei
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, P.R. China
| | - Yan Xu
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, P.R. China
| | - Min Shao
- Laboratory for Microstructures, Instrumental Analysis and Research Center of Shanghai University, Shanghai University, Shanghai 200444, P.R. China
| | - Zhiming Duan
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, P.R. China
| | - Chuanhu Lei
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, P.R. China
| |
Collapse
|
4
|
Liang K, Chen H, Wang X, Lu T, Duan Z, Sessler JL, Lei C. Di-2,7-pyrenidecaphyrin(1.1.0.0.0.1.1.0.0.0) and Its Bis-Organopalladium Complexes: Synthesis and Chiroptical Properties. Angew Chem Int Ed Engl 2023; 62:e202212770. [PMID: 36401592 DOI: 10.1002/anie.202212770] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/24/2022] [Accepted: 11/18/2022] [Indexed: 11/21/2022]
Abstract
A non-aromatic expanded carbaporphyrinoid, incorporating two built-in 2,7-pyrenylene moieties was synthesized. The intrinsically labile structure was demonstrated by proton-triggered conformational changes between the figure-of-eight and quasi-Möbius conformers. Upon treatment with Pd(OAc)2 , the reaction produces two bis-PdII complexes with distinct coordination modes. Metal coordination serves to fix the macrocyclic frameworks with the net result that both bis-PdII complexes could be resolved by high performance liquid chromatography (HPLC) on a chiral stationary phase. The isolated enantiomers showed persistent chiroptical properties as evidenced by the intense response in the circular dichroism (CD) spectra and the record high absorption dissymmetry factors (gabs of up to 0.038) seen in the near-infrared spectral region. Moreover, the mutual interconversion of these two PdII complexes was found to be stereospecific and to favor the more stable isomers under weakly acidic conditions.
Collapse
Affiliation(s)
- Kejiang Liang
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, College of Science, Shanghai University, Shanghai, 200444, P. R. China
| | - Hao Chen
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, College of Science, Shanghai University, Shanghai, 200444, P. R. China
| | - Xue Wang
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, College of Science, Shanghai University, Shanghai, 200444, P. R. China
| | - Tian Lu
- Materials Genome Institute, Shanghai University, Shanghai, 200444, P. R. China
| | - Zhiming Duan
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, College of Science, Shanghai University, Shanghai, 200444, P. R. China
| | - Jonathan L Sessler
- Department of Chemistry, The University of Texas at Austin, 105 East 24th Street, Stop A5300, Austin, TX 78712-1224, USA
| | - Chuanhu Lei
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, College of Science, Shanghai University, Shanghai, 200444, P. R. China
| |
Collapse
|
5
|
Bella G, Milone M, Bruno G, Santoro A. Which DFT factors influence the accuracy of 1H, 13C and 195Pt NMR chemical shift predictions in organopolymetallic square-planar complexes? New scaling parameters for homo- and hetero-multimetallic compounds and their direct applications. Phys Chem Chem Phys 2022; 24:26642-26658. [DOI: 10.1039/d2cp02773a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Because of their chemical heterogeneity, stereochemical complexity and the presence of heavy atoms involving orbitals with high quantum number L, organopolymetallic complexes require considerable focus during their NMR spectral interpretation.
Collapse
Affiliation(s)
- Giovanni Bella
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d’Alcontres 31, 98166 Messina, Italy
- Department of Health Science, University of Catanzaro, Viale Europa, 88100 Catanzaro, Italy
| | - Marco Milone
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Giuseppe Bruno
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Antonio Santoro
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d’Alcontres 31, 98166 Messina, Italy
| |
Collapse
|