Influence of the Molar Ratio and Solvent on the Coordination Modes of 1,7-Dibenzyl-4,10-bis(pyridin-4-ylmethyl)cyclen

Inorganic Chemistry
Eunji LeeYoichi Habata

Abstract

The synthesis of a tetra-armed cyclen (L) with two benzyl groups at the 1- and 7-positions and two pyridin-4-ylmethyl groups at the 4- and 10-positions as side arms and the solvent- and/or molar-ratio-dependent coordination modes in the formation of silver(I) complexes are reported. 1H NMR and cold-spray-ionization mass spectrometry studies suggest that a silver(I) complex with L gives different species depending on the molar ratio of silver ions used as the reactant. Furthermore, the conformation of cyclen in the one-dimensional (1D) coordination polymers, obtained using 2 equiv of silver(I), changes depending on the presence or absence of acetonitrile. When L was reacted with 1 and 2 equiv of silver(I) triflate in a mixed solvent system (CH2Cl2/CH3OH/CH3CN), a dimetallo[3.3]paracyclophane-like discrete cyclic dimer, [Ag2L2](OTf)2 (1), and a 1D coordination polymer, [Ag2L(OTf)2(CH3CN)] n (2), respectively, were obtained as single crystals. In the absence of acetonitrile, a zigzag 1D coordination polymer, {[Ag2L(OTf)]OTf·3CH2Cl2} n (3), was obtained when 2 equiv of silver(I) was used. Molar-ratio-dependent structural changes were not observed when L was reacted with AgBF4 or AgPF6 in the CH2Cl2/CH3OH/CH3CN mixed-solvent syste...Continue Reading

References

Apr 23, 2004·Chemical Society Reviews·Xiangyang Liang, Peter J Sadler
Jun 22, 2005·Chemical Communications : Chem Comm·Thorfinnur Gunnlaugsson, Joseph P Leonard
May 4, 2011·Chemistry : a European Journal·Guillaume OrtizRoger Guilard
Sep 20, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Raúl Díaz-Torres, Santiago Alvarez
Jan 24, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Yaroslaw D LampekaVladimir B Arion
Aug 30, 2012·Organic Letters·Yoichi HabataShunsuke Kuwahara
Oct 5, 2012·Chemical Society Reviews·Satoshi Shinoda
Mar 2, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Yoichi HabataShunsuke Kuwahara
May 21, 2013·Organic & Biomolecular Chemistry·Yoichi HabataShunsuke Kuwahara
Nov 14, 2014·Angewandte Chemie·Hubert Schmidbaur, Annette Schier
Nov 22, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Yoichi HabataShunsuke Kuwahara
Aug 6, 2015·Accounts of Chemical Research·Tanmaya JoshiLeone Spiccia
Feb 20, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Huiyeong JuYoichi Habata
Feb 28, 2020·Chemical Communications : Chem Comm·Eunji LeeYoichi Habata

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