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Liu T, Hong R, Lu R, Fan Z, Wang H, Wang Y, Li H, Fan Q, Bruce King R. Olefin Coordination Versus Weak Agostic C-H-M Interactions in Sandwich-Type Complexes of the Split (3+2) Five-Electron Donor Hydrocarbon Ligand Tricyclo[5.2.1.0]-deca-3,8-dien-5-yl (dicp) Related to Cyclopentadiene Dimer. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Li H, Wang L, Hu Y, Zhang Z, Wan D, Fan Q, King RB, Schaefer HF. Comparative Study of the Thermal Stabilities of the Experimentally Known High-Valent Fe(IV) Compounds Fe(1-norbornyl) 4 and Fe(cyclohexyl) 4. J Phys Chem A 2020; 124:6867-6876. [PMID: 32786998 DOI: 10.1021/acs.jpca.0c04055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The high stability of the experimentally known homoleptic 1-norbornyl derivative (nor)4Fe of iron in the unusual +4 oxidation state is a consequence of the high reaction barriers of the singlet or triplet potential surfaces constrained by the global dispersion attraction and the great steric demands of the norbornyl groups. The much more limited stability of the corresponding cyclohexyl derivative (cx)4Fe may result from the conical intersection between the singlet potential surface and the quintet spin potential surface arising from the weaker dispersion attraction and the reduced steric effect of the cyclohexyl groups relative to the 1-norbornyl groups. In contrast, the high stability of the likewise experimentally known (cx)4M (M = Ru or Os) structures results from the larger ligand field splitting (Δ) of the d-orbital energies for the second and third-row transition metals ruthenium and osmium relative to that of the first-row transition metal iron. The cyclohexyl derivative (cx)4Fe is predicted to be reactive toward carbon monoxide to insert CO into up to two Fe-C bonds. However, the dispersion effect as well as the much larger size of the 1-norbornyl substituents prevents similar reactivity of (nor)4Fe with carbon monoxide.
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Affiliation(s)
- Huidong Li
- School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China.,Department of Chemistry and Center for Computational Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Linshen Wang
- School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
| | - Yucheng Hu
- School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
| | - Ze Zhang
- School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
| | - Di Wan
- School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
| | - Qunchao Fan
- School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
| | - R Bruce King
- Department of Chemistry and Center for Computational Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Henry F Schaefer
- Department of Chemistry and Center for Computational Chemistry, University of Georgia, Athens, Georgia 30602, United States
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Li H, Zhang Z, Wang L, Wan D, Hu Y, Fan Q, King RB, Schaefer HF. Unusual effects of the bulky 1-norbornyl group in cobalt carbonyl chemistry: low-energy structures with agostic hydrogen atoms. NEW J CHEM 2020. [DOI: 10.1039/d0nj01320j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Low-energy (nor)Co(CO)n (n = 3, 2) and (nor)2Co2(CO)n (nor = 1-norbornyl; n = 6, 5) structures are found to have agostic hydrogen atoms from a CH2 group adjacent to the Co–C bond forming C–H–Co bridges. In addition, low-energy structures are found with (nor)CO acyl ligands resulting from carbonyl migration.
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Affiliation(s)
- Huidong Li
- School of Science
- Key laboratory of High Performance Scientific Computation
- Xihua University
- Chengdu
- China
| | - Ze Zhang
- School of Science
- Key laboratory of High Performance Scientific Computation
- Xihua University
- Chengdu
- China
| | - Linshen Wang
- School of Science
- Key laboratory of High Performance Scientific Computation
- Xihua University
- Chengdu
- China
| | - Di Wan
- School of Science
- Key laboratory of High Performance Scientific Computation
- Xihua University
- Chengdu
- China
| | - Yucheng Hu
- School of Science
- Key laboratory of High Performance Scientific Computation
- Xihua University
- Chengdu
- China
| | - Qunchao Fan
- School of Science
- Key laboratory of High Performance Scientific Computation
- Xihua University
- Chengdu
- China
| | - R. Bruce King
- Center for Computational Quantum Chemistry
- University of Georgia
- Athens
- USA
| | - Henry F. Schaefer
- Center for Computational Quantum Chemistry
- University of Georgia
- Athens
- USA
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Li N, Zhao Z, Yu C, Wu B, Bian Z, Zhang WX, Xi Z. Alkaline-earth metallacyclic complexes bearing a diborane-bridged tetraamide ligand: synthesis, structure and fluorescence property. Dalton Trans 2019; 48:9067-9071. [PMID: 31180397 DOI: 10.1039/c9dt02118c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of alkaline-earth (Mg, Ca, and Sr) metallacyclic complexes bearing a diborane-bridged tetraamide ligand were achieved for the first time through a clean one-step approach. All of these metallacycles were characterized by single-crystal X-ray diffraction analyses. UV-Vis absorption/emission spectroscopy showed deep blue fluorescence of these complexes.
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Affiliation(s)
- Nan Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China.
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Zhou K, Yue F, Chen HM, Liu TT, Wang JD. A Novel Layer Crystal Structure of Sr(II) Complex based on 2-methyl-1H-imidazole-4,5-dicarboxylate Ligand. RUSS J COORD CHEM+ 2019. [DOI: 10.1134/s1070328419010147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Zhu M, Liu L, Zhang Y, Yu HT, Zhang WX, Xi Z. Selective Transformation of Well-Defined Alkenyllithiums to Alkenylmagnesiums via Transmetalation. Chemistry 2018; 24:3186-3191. [DOI: 10.1002/chem.201704611] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Indexed: 01/05/2023]
Affiliation(s)
- Miaomiao Zhu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of, Ministry of Education, College of Chemistry; Peking University; Beijing 100871 P. R. China
- College of Chemistry and Materials Science; Hebei Normal University; Shijiazhuang 050024 P. R. China
| | - Liang Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of, Ministry of Education, College of Chemistry; Peking University; Beijing 100871 P. R. China
| | - Yongliang Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of, Ministry of Education, College of Chemistry; Peking University; Beijing 100871 P. R. China
| | - Hai-Tao Yu
- College of Chemistry and Materials Science; Hebei Normal University; Shijiazhuang 050024 P. R. China
| | - Wen-Xiong Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of, Ministry of Education, College of Chemistry; Peking University; Beijing 100871 P. R. China
| | - Zhenfeng Xi
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of, Ministry of Education, College of Chemistry; Peking University; Beijing 100871 P. R. China
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Wei B, Zhang WX, Xi Z. Well-defined styryl and biphenyl calcium complexes from dilithio compounds and calcium iodide: synthesis, structure and reactivity toward nitrous oxide. Dalton Trans 2018; 47:12540-12545. [PMID: 29756145 DOI: 10.1039/c8dt01046c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Efficient synthesis and structure elucidation of carbon–calcium σ-bonded compounds are of remarkable interest and importance in organometallic chemistry of the heavier s-block metals.
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Affiliation(s)
- Baosheng Wei
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871
| | - Wen-Xiong Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871
| | - Zhenfeng Xi
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871
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Wei B, Liu L, Zhang WX, Xi Z. Synthesis and Structural Characterization of Butadienylcalcium-based Heavy Grignard Reagents and a Ca4[O] Inverse Crown Ether Complex. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704176] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Baosheng Wei
- Beijing National Laboratory for Molecular Sciences (BNLMS); Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 China
| | - Liang Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS); Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 China
| | - Wen-Xiong Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS); Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 China
| | - Zhenfeng Xi
- Beijing National Laboratory for Molecular Sciences (BNLMS); Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Shanghai 200032 China
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Wei B, Liu L, Zhang WX, Xi Z. Synthesis and Structural Characterization of Butadienylcalcium-based Heavy Grignard Reagents and a Ca4[O] Inverse Crown Ether Complex. Angew Chem Int Ed Engl 2017; 56:9188-9192. [DOI: 10.1002/anie.201704176] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 05/20/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Baosheng Wei
- Beijing National Laboratory for Molecular Sciences (BNLMS); Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 China
| | - Liang Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS); Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 China
| | - Wen-Xiong Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS); Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 China
| | - Zhenfeng Xi
- Beijing National Laboratory for Molecular Sciences (BNLMS); Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Shanghai 200032 China
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