A uudd Cyclic Water Tetramer and an Opened Octameric Water Cluster in the Charge-Transfer Salts of the Bipyridinium Cation

Yan-qiong Sun; Jie Zhang; Zhan-feng Ju; Guo-Yu Yang

doi:10.1071/CH05110

RESEARCH ARTICLE

Previous Next Contents Vol 58(8)

A uudd Cyclic Water Tetramer and an Opened Octameric Water Cluster in the Charge-Transfer Salts of the Bipyridinium Cation

Yan-qiong Sun ^A , Jie Zhang ^A ^B , Zhan-feng Ju ^A and Guo-Yu Yang ^A

+ Author Affiliations

- Author Affiliations

^A State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.

^B Corresponding author. Email: zhangjie@fjirsm.ac.cn

Australian Journal of Chemistry 58(8) 572-577 https://doi.org/10.1071/CH05110
Submitted: 29 April 2005 Accepted: 14 July 2005 Published: 31 August 2005

Abstract

Two novel charge-transfer salts, [(Bpyph)(SCN)₂]·2H₂O 1 and {(HBpyph)[Fe(CN)₆]}·5.5H₂O 2, have been synthesized and characterized using elemental analysis, IR spectroscopy, and X-ray single-crystal diffraction studies. Compound 1 is the first bipyridinium charge-transfer salt containing a cyclic water tetramer, in which the uudd cyclic water tetramers built from four symmetry related water molecules join the Bpyph²⁺ cations to the dimer by hydrogen bonds between the water molecules and the nitrogen atoms of Bpyph²⁺. The cooperation of the hydrogen-bonding and π–π stacking interactions between the pyridyl groups results in the formation of an infinite ribbon with a herringbone arrangement. An opened water octamer has been observed in 2. It presents a new association mode of water molecules that is not predicted theoretically nor found experimentally. The water octamer is hydrogen-bonded to two HBpyph³⁺ cations and two [Fe(CN)₆]³⁻ anions to form water octamer-bridged HBpyPh-Fe(CN)₆ dimers, which are further connected to each other via π–π offset stacking interactions to generate an infinite one-dimensional ribbon.

Acknowledgments

The authors acknowledge the financial support of the Natural Science Foundation of China (No. 20201010/50372069), the Natural Science Foundation of Fujian Province of China (No. E0220003), and the Ministry of Personnel of China.

References

A uudd Cyclic Water Tetramer and an Opened Octameric Water Cluster in the Charge-Transfer Salts of the Bipyridinium Cation

Abstract

Acknowledgments

Subscriber Login