Solvent-Driven Structural Diversities in ZnII Coordination Polymers and Complexes Derived from Bis-pyridyl Ligands Equipped with a Hydrogen-Bond-Capable Urea Backbone

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• 作者：Subhabrata Banerjee ; N. N. Adarsh ; Parthasarathi Dastidar
• 刊名：Crystal Growth & Design
• 出版年：2012
• 出版时间：December 5, 2012
• 年：2012
• 卷：12
• 期：12
• 页码：6061-6067
• 全文大小：475K
• 年卷期：v.12,no.12(December 5, 2012)
• ISSN：1528-7505

文摘

A new series Zn^II metal鈥搊rganic compounds [both coordination complexes (CCs) and coordination polymers (CPs)] derived from bis-pyridyl ligands equipped with hydrogen-bonding functionality such as urea have been synthesized and characterized by single crystal X-ray crystallography. Out of the six compounds reported herein, [{Zn(渭-3bpmu)Clb>2b>}] (<b>CP1b>), [{Zn(渭-3bpmu)Clb>2b>}路benzene] (<b>CP2b>), [{Zn(渭-3bpmu)Clb>2b>}路p-xylene] (<b>CP3b>), and [{Zn(渭-4bpmu)Clb>2b>}路p-xylene] (<b>CP4b>) are coordination polymers, whereas [{Znb>2b>(渭-3bpu)b>2b>Clb>4b>}路p-xylene] (<b>CC1b>) and [{Znb>2b>(渭-3bpu)b>2b>Clb>4b>}路benzene] (<b>CC2b>) are coordination complexes. The solvent of crystallization has profound effect on the supramolecular architecture of the resultant coordination compounds; while crystallization in the presence of aromatic solvents resulted in guest occluded crystals (<b>CP2b>鈥?b>CP4b>, <b>CC1b>, and <b>CC2b>), crystallization using only polar solvents produced crystals devoid of guests. Aromatic solvents appear to have induced the formation of metallamacrocycle in <b>CC1b> and <b>CC2b>.