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Threefold Spiral Structure Constructed by 1D Chains of $[[M(NCS)_{2}(bpa)_{2}]·biphenyl]_{n}$ (M = Fe, Co; bpa = 1,2-bis(4-pyridyl)ethane)
| Content Provider | Directory of Open Access Journals (DOAJ) |
|---|---|
| Author | Satoshi Tokinobu Haruka Dote Satoru Nakashima |
| Abstract | Assembled complexes $[[M(NCS)_{2}(bpa)_{2}]·biphenyl]_{n}$ (M = Fe, Co; bpa = 1,2-bis(4-pyridyl)ethane) have been synthesized because $[Fe(NCBH_{3})_{2}(bpa)_{2}·biphenyl]_{n}$ has a novel threefold spiral structure and shows stepwise spin-crossover phenomenon. We attempted to obtain spiral structures for $[[Fe(NCS)_{2}(bpa)_{2}]·biphenyl]_{n}$ and $[[Co(NCS)_{2}(bpa)_{2}]·biphenyl]_{n}$ using a one-step diffusion method, while the reported spiral structure of $[[Fe(NCBH_{3})_{2}(bpa)_{2}]·biphenyl]_{n}$ was obtained by diffusion method after synthesizing Fe(II)-pyridine complex. X-ray structural analysis revealed that $[[Fe(NCS)_{2}(bpa)_{2}]·biphenyl]_{n}$ and $[[Co(NCS)_{2}(bpa)_{2}]·biphenyl]_{n}$ had a chiral propeller structure of pyridines around the central metal, and they had a novel spiral structure and chiral space group $P3_{1}2_{1}$ without the presence of chiral auxiliaries. It was shown that the host 1D chain, having a chiral propeller structure of pyridines around the central metal along with its concerted interaction with an atropisomer of biphenyl, made a threefold spiral structure. |
| e-ISSN | 20734352 |
| DOI | 10.3390/cryst9020097 |
| Journal | Crystals |
| Issue Number | 2 |
| Volume Number | 9 |
| Language | English |
| Publisher | MDPI AG |
| Publisher Date | 2019-01-01 |
| Publisher Place | Switzerland |
| Access Restriction | Open |
| Subject Keyword | Crystallography Spiral Structure 1,2-bis(4-pyridyl)ethane Supramolecular Coordination Polymer Chiral Propeller Structure Atropisomerism |
| Content Type | Text |
| Resource Type | Article |
