Modification of Cooperativity and Critical Temperatures on a Hofmann-Like Template Structure by Modular Substituent
In a series of Hofmann-like spin crossover complexes, two new compounds, {Fe(3-F-4-Methyl-py)2[Au(CN)2]2} (1) and {Fe(3-Methyl-py)2[Au(CN)2]2} (2) (py = pyridine) are described. The series maintains a uniform 2-dimentional (2-D) layer structure of {Fe[Au(CN)2]2}. The layers are combined with another...
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MDPI AG
2017-08-01
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| Series: | Inorganics |
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| Online Access: | https://www.mdpi.com/2304-6740/5/3/55 |
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| author | Takashi Kosone Takeshi Kawasaki Itaru Tomori Jun Okabayashi Takafumi Kitazawa |
| author_facet | Takashi Kosone Takeshi Kawasaki Itaru Tomori Jun Okabayashi Takafumi Kitazawa |
| author_sort | Takashi Kosone |
| collection | DOAJ |
| description | In a series of Hofmann-like spin crossover complexes, two new compounds, {Fe(3-F-4-Methyl-py)2[Au(CN)2]2} (1) and {Fe(3-Methyl-py)2[Au(CN)2]2} (2) (py = pyridine) are described. The series maintains a uniform 2-dimentional (2-D) layer structure of {Fe[Au(CN)2]2}. The layers are combined with another layer by strong aurophilic interactions, which results in a bilayer structure. Both coordination compounds 1 and 2 at 293 K crystallize in the centrosymmetric space groups P21/c. The asymmetric unit contains two pyridine derivative ligands, one type of Fe2+, and two types of crystallographically distinct [Au(CN)2]− units. Compound 1 undergoes a complete two-step spin transition. On the other hand, 2 maintains the characteristic of the high-spin state. The present compounds and other closely related bilayer compounds are compared and discussed in terms of the cooperativity and critical temperature. The bilayer structure is able to be further linked by substituent-substituent contact resulting in 3-dimentional (3-D) network cooperativity. |
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| issn | 2304-6740 |
| language | English |
| last_indexed | 2024-12-13T08:14:14Z |
| publishDate | 2017-08-01 |
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| spelling | doaj.art-9d92069825984260a13f3a0f1fcb698b2022-12-21T23:54:09ZengMDPI AGInorganics2304-67402017-08-01535510.3390/inorganics5030055inorganics5030055Modification of Cooperativity and Critical Temperatures on a Hofmann-Like Template Structure by Modular SubstituentTakashi Kosone0Takeshi Kawasaki1Itaru Tomori2Jun Okabayashi3Takafumi Kitazawa4Department of Creative Technology Engineering Course of Chemical Engineering, Anan College, 265 Aoki, Minobayashi, Anan, Tokushima 774-0017, JapanDepartment of Chemistry, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, JapanDepartment of Chemistry, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, JapanResearch Center for Spectrochemistry, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, JapanDepartment of Chemistry, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, JapanIn a series of Hofmann-like spin crossover complexes, two new compounds, {Fe(3-F-4-Methyl-py)2[Au(CN)2]2} (1) and {Fe(3-Methyl-py)2[Au(CN)2]2} (2) (py = pyridine) are described. The series maintains a uniform 2-dimentional (2-D) layer structure of {Fe[Au(CN)2]2}. The layers are combined with another layer by strong aurophilic interactions, which results in a bilayer structure. Both coordination compounds 1 and 2 at 293 K crystallize in the centrosymmetric space groups P21/c. The asymmetric unit contains two pyridine derivative ligands, one type of Fe2+, and two types of crystallographically distinct [Au(CN)2]− units. Compound 1 undergoes a complete two-step spin transition. On the other hand, 2 maintains the characteristic of the high-spin state. The present compounds and other closely related bilayer compounds are compared and discussed in terms of the cooperativity and critical temperature. The bilayer structure is able to be further linked by substituent-substituent contact resulting in 3-dimentional (3-D) network cooperativity.https://www.mdpi.com/2304-6740/5/3/55coordination polymercooperative interactioncrystal engineeringspin crossover |
| spellingShingle | Takashi Kosone Takeshi Kawasaki Itaru Tomori Jun Okabayashi Takafumi Kitazawa Modification of Cooperativity and Critical Temperatures on a Hofmann-Like Template Structure by Modular Substituent Inorganics coordination polymer cooperative interaction crystal engineering spin crossover |
| title | Modification of Cooperativity and Critical Temperatures on a Hofmann-Like Template Structure by Modular Substituent |
| title_full | Modification of Cooperativity and Critical Temperatures on a Hofmann-Like Template Structure by Modular Substituent |
| title_fullStr | Modification of Cooperativity and Critical Temperatures on a Hofmann-Like Template Structure by Modular Substituent |
| title_full_unstemmed | Modification of Cooperativity and Critical Temperatures on a Hofmann-Like Template Structure by Modular Substituent |
| title_short | Modification of Cooperativity and Critical Temperatures on a Hofmann-Like Template Structure by Modular Substituent |
| title_sort | modification of cooperativity and critical temperatures on a hofmann like template structure by modular substituent |
| topic | coordination polymer cooperative interaction crystal engineering spin crossover |
| url | https://www.mdpi.com/2304-6740/5/3/55 |
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