Synthesis and Supramolecular Architectures of Dinuclear Metallacyclic Silver(I) and Zigzag‐Chain Copper(II) Complexes Bearing 2, 6‐Pyridinediylbis(3‐pyridinyl)methanone. Issue 30 (27th August 2013)

• Record Type: Journal Article
• Authors: Wan, Chong‐Qing; Al‐Thabaiti, Shaeel A.; Chen, Xu‐Dong; Mak, Thomas C. W.
• Is Part Of: European journal of inorganic chemistry. Issue 30(2013)
• Page Start: 5265
• Page End: 5273
• Publication Date: 2013-08-27
• Subjects: Supramolecular chemistry -- Metallacycles -- N ligands -- Silver -- Copper; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201300696
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract: The reaction of 2, 6‐pyridinediylbis(3‐pyridinyl)methanone (abbreviated asL ) with various silver(I) salts yielded a series of complexes, namely, [Ag2 (L )2 ](ClO4 )2 (1 ), {[Ag2 (L )2 ](ClO4 )2 }∞ (2 ), {[Ag2 (L )2 ](NO3 )2 }∞ (3 ), {[Ag2 (L )2 ](C2 F5 CO2 )2 }∞ (4 ), {[Ag2 (L )2 ](C3 F7 CO2 )2 }∞ (5 ), and {[Ag2 (L )2 ](O2 CC3 F6 CO2 )· 2H2 O}∞ (6 ), which exhibit a common dinuclear metallacyclic [Ag2 (L )2 ] 2+ skeleton that involves linear‐dicoordinate Ag I and μ2 ‐ N, N ‐bridgingL . Complex2 is a polymorph of1 obtained by the solvent‐medium tuning effect, and it has an {[Ag2 (L )2 ] 2+ }∞ infinite‐chain structure. In complexes3 –6, the argentophilic interaction plays an important role in connecting the [Ag2 (L )2 ] 2+ units to form a similar {[Ag2 (L )2 ] 2+ }∞ chain structure to that in2, although the counteranions are markedly different. The copper(II) complex {[Cu2 (CH3 CO2 )4 (L )]· 2H2 O}∞ (7 ) exhibits a zigzag‐chain structure composed of an alternating arrangement ofL and the Cu2 (CH3 CO2 )4 paddlewheel cluster. In the supramolecular architectures of1 –7, the counteranions engage in multiple noncovalent interactions, and the presence of unusual types such as O/F(anion)··· π, O/F(anion)··· C=O, and C=O··· π are noted and discussed. Abstract : Silver(I) complexes of 2, 6‐pyridinediylbis(3‐pyridinyl)methanone (L ) exhibit a common [Ag2 (L )2 ] 2+ metallacycle assembled by the μ2 ‐ N, N ‐bridgingL in the exo–endo mode; such dinuclear units are connected by an argentophilic interaction to form an infinite band. In the presence of a Cu2 (CH3 CO2 )4 paddlewheel cluster, L acts in the exo–exo mode to generate an infinite zigzag chain of bridged clusters.