Crystal Engineering through Halogen Bonding: Complexes of Nitrogen Heterocycles with Organic Iodides

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• 作者：Rosa Bailey Walsh ; Clifford W. Padgett ; Pierangelo Metrangolo ; Giuseppe Resnati ; T. W. Hanks ; and William T. Pennington
• 刊名：Crystal Growth & Design
• 出版年：2001
• 出版时间：March 2001
• 年：2001
• 卷：1
• 期：2
• 页码：165 - 175
• 全文大小：502K
• 年卷期：v.1,no.2(March 2001)
• ISSN：1528-7505

文摘

X-ray analysis has revealed that 4,4'-bipyridine, 1,2-bis(4-pyridyl)ethylene, and hexamethylenetetramine form donor-acceptor complexes with 1,4-diiodobenzene, 1,4-diiodotetrafluorobenzene, and tetraiodoethylenein which the N···I distance is longer than that for the corresponding I₂ complexes. As opposed to the correspondingI₂ complexes that are molecular adducts, these complexes have extended structures and longer N···I distances. Stericand electronic effects influence the strength of the N···I interaction and the crystal packing. An additional complexof 1,2-bis(4-pyridyl)ethane and 1,4-dibromotetrafluorobenzene has also been investigated for comparison of N···Iand N···Br interactions.