1
|
Adi LC, Santria A, Ishikawa N. Tuning of the antiferromagnetic-type interaction in photo-excited single-decker porphyrin-lanthanide complexes with different crown capping ligands. Dalton Trans 2024; 53:628-639. [PMID: 38073480 DOI: 10.1039/d3dt02842a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
The magnetic interaction between the total angular momentum (J) of the 4f electrons in a lanthanide ion and the orbital angular momentum (L) of a porphyrin in the photo-excited states of 5,10,15,20-tetraphenylporphyrinato Dy(III) complexes capped with a crown ether with one of two different symmetries, 12-crown-4 or 1-aza-12-crown-4, was investigated by temperature- and magnetic dependent magnetic circular dichroism (VT-VH MCD). The analysis was conducted on the complexes with different non-aromatic ligands to investigate how different symmetries of the non-aromatic ligands have an impact on the electronic interaction causing an anti-parallel orientation of J and L. The magnitude of the J-L interaction was determined from simulation-based fitting to experimental ratios. While in both cases an antiferromagnetic-type interaction between J and L was identified, an asymmetric non-aromatic ligand resulted in an increased magnitude of the J-L interaction.
Collapse
Affiliation(s)
- Langit Cahya Adi
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
| | - Anas Santria
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
- Research Center for Chemistry, National Research and Innovation Agency, Kawasan PUSPITEK, Serpong, Tangerang Selatan, Banten, 15314, Indonesia
| | - Naoto Ishikawa
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
| |
Collapse
|
2
|
Adi LC, Santria A, Ishikawa N. Magnetic interaction of photoexcited terbium-porphyrin complexes with non-aromatic ligands having different symmetries. Dalton Trans 2022; 51:6186-6196. [PMID: 35383819 DOI: 10.1039/d2dt00306f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Interaction between the total angular momentum (J) of 4f electrons in lanthanides and the orbital angular momentum (L) of porphyrins in the photoexcited states was investigated by temperature-dependent and magnetic circular dichroism (MCD) for 5,10,15,20-tetraphenylporphyrinato (TPP) terbium(III) complexes with two different non-aromatic ligands i.e. 12-crown-4(1,4,7,10-tetraoxacyclododecane) and 1-aza-12-crown-4(1,4,7-trioxa-10-azacyclododecane). The two cases with different ligands were examined in order to understand how magnetic interaction depends on the symmetry of the non-aromatic ligands. The three absorption bands in the visible region, B(0,0), Q(1,0), and Q(0,0) bands, showed temperature-dependent MCD A term. For each band, the J-L interaction was determined from the simulation-based fitting to experimental ratios. An increase in the magnitude of the J-L interaction was observed when the second ligand was the aza-crown with a lower symmetry. Ab initio RASSCF/RASSI calculations were performed to explore the effect of the difference in the second ligand to the ligand centred excited states and the ligand-field-splitting structure on the metal-centred ground multiplet of J = 6.
Collapse
Affiliation(s)
- Langit Cahya Adi
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
| | - Anas Santria
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan. .,National Research and Innovation Agency, Jalan M.H. Thamrin No. 8, Jakarta Pusat, Jakarta 10340, Indonesia
| | - Naoto Ishikawa
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
| |
Collapse
|
3
|
Hart MD, Meyers JJ, Wood ZA, Nakakita T, Applegate JC, Erickson NR, Gerasimchuk NN, Barybin MV. Tuning π-Acceptor/σ-Donor Ratio of the 2-Isocyanoazulene Ligand: Non-Fluorinated Rival of Pentafluorophenyl Isocyanide and Trifluorovinyl Isocyanide Discovered. Molecules 2021; 26:molecules26040981. [PMID: 33673291 PMCID: PMC7918097 DOI: 10.3390/molecules26040981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/05/2021] [Accepted: 02/09/2021] [Indexed: 11/27/2022] Open
Abstract
Isocyanoazulenes (CNAz) constitute a relatively new class of isocyanoarenes that offers rich structural and electronic diversification of the organic isocyanide ligand platform. This article considers a series of 2-isocyano-1,3-X2-azulene ligands (X = H, Me, CO2Et, Br, and CN) and the corresponding zero-valent complexes thereof, [(OC)5Cr(2-isocyano-1,3-X2-azulene)]. Air- and thermally stable, X-ray structurally characterized 2-isocyano-1,3-dimethylazulene may be viewed as a non-benzenoid aromatic congener of 2,6-dimethyphenyl isocyanide (2,6-xylyl isocyanide), a longtime “workhorse” aryl isocyanide ligand in coordination chemistry. Single crystal X-ray crystallographic {Cr–CNAz bond distances}, cyclic voltametric {E1/2(Cr0/1+)}, 13C NMR {δ(13CN), δ(13CO)}, UV-vis {dπ(Cr) → pπ*(CNAz) Metal-to-Ligand Charge Transfer}, and FTIR {νN≡C, νC≡O, kC≡O} analyses of the [(OC)5Cr(2-isocyano-1,3-X2-azulene)] complexes provided a multifaceted, quantitative assessment of the π-acceptor/σ-donor characteristics of the above five 2-isocyanoazulenes. In particular, the following inverse linear relationships were documented: δ(13COtrans) vs. δ(13CN), δ(13COcis) vs. δ(13CN), and δ(13COtrans) vs. kC≡O,trans force constant. Remarkably, the net electron withdrawing capability of the 2-isocyano-1,3-dicyanoazulene ligand rivals those of perfluorinated isocyanides CNC6F5 and CNC2F3.
Collapse
Affiliation(s)
- Mason D. Hart
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, KS 66045, USA; (M.D.H.); (Z.A.W.); (T.N.); (J.C.A.); (N.R.E.)
| | - John J. Meyers
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, KS 66045, USA; (M.D.H.); (Z.A.W.); (T.N.); (J.C.A.); (N.R.E.)
- Department of Chemistry & Physics, Clayton State University, 2000 Clayton State Blvd., Morrow, GA 30260, USA
- Correspondence: (J.J.M.J.); (N.N.G.); (M.V.B.)
| | - Zachary A. Wood
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, KS 66045, USA; (M.D.H.); (Z.A.W.); (T.N.); (J.C.A.); (N.R.E.)
| | - Toshinori Nakakita
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, KS 66045, USA; (M.D.H.); (Z.A.W.); (T.N.); (J.C.A.); (N.R.E.)
| | - Jason C. Applegate
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, KS 66045, USA; (M.D.H.); (Z.A.W.); (T.N.); (J.C.A.); (N.R.E.)
| | - Nathan R. Erickson
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, KS 66045, USA; (M.D.H.); (Z.A.W.); (T.N.); (J.C.A.); (N.R.E.)
| | - Nikolay N. Gerasimchuk
- Department of Chemistry, Missouri State University, 901 S. National Ave., Springfield, MO 65897, USA
- Correspondence: (J.J.M.J.); (N.N.G.); (M.V.B.)
| | - Mikhail V. Barybin
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, KS 66045, USA; (M.D.H.); (Z.A.W.); (T.N.); (J.C.A.); (N.R.E.)
- Correspondence: (J.J.M.J.); (N.N.G.); (M.V.B.)
| |
Collapse
|
4
|
Schraff S, Trampert J, Orthaber A, Pammer F. Electronic Properties and Solid-State Packing of Isocyanofulvenes and Their Gold(I) Chloride Complexes. Inorg Chem 2020; 59:17171-17183. [DOI: 10.1021/acs.inorgchem.0c02435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sandra Schraff
- Institute of Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Jens Trampert
- Institute of Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Andreas Orthaber
- Department of Chemistry−Ångström Laboratories, Uppsala University, Box 523, 75120 Uppsala, Sweden
| | - Frank Pammer
- Institute of Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| |
Collapse
|