803733-65-5Relevant articles and documents
The power of nonconventional phenyl C-H?N hydrogen bonds: Supportive crystal-packing force and dominant supramolecular engineering force
Bosch, Eric,Bowling, Nathan P.,Darko, Jeffery
, p. 1634 - 1641 (2015/04/14)
The role of phenyl C-H···N interactions in crystal engineering is explored with a variety of fluorinated phenyl-containing compounds. In particular, we show that this interaction can guide the formation of one-dimensional phenyl C-H···N hydrogen-bonded ribbons with, for example, 4-(2,3,5,6-tetrafluorophenylethynyl)pyridine. The interaction is shown to also control the formation of self-complementary homodimers with 3-(2,3,4,5-tetrafluorophenylethynyl)pyridine. We also demonstrate that the phenyl C-H···N hydrogen bond interaction is capable of enticing co-crystallization of molecules such as 2,3,5,6,2′,3′,5′,6′-octafluorobiphenyl and 4,4′-dipyridyl. Finally, we describe the use of an intramolecular scaffold to evaluate the effect of electron-withdrawing substituents on the strength of a phenyl C-H···N hydrogen bond.
Halogen bonding of (iodoethynyl)benzene derivatives in solution
Dumele, Oliver,Wu, Dino,Trapp, Nils,Goroff, Nancy,Diederich, Francois
, p. 4722 - 4725 (2015/04/27)
Halogen bonding (XB) between (iodoethynyl)benzene donors and quinuclidine in benzene affords binding free enthalpies (δG, 298 K) between -1.1 and -2.4 kcal mol-1, with a strong LFER with the Hammett parameter σpara. The enthalpic dri
Ligand bridging-angle-driven assembly of molecular architectures based on quadruply bonded Mo-Mo dimers
Li, Jian-Rong,Yakovenko, Andrey A.,Lu, Weigang,Timmons, Daren J.,Zhuang, Wenjuan,Yuan, Daqiang,Zhou, Hong-Cai
supporting information; experimental part, p. 17599 - 17610 (2011/02/26)
A systematic exploration of the assembly of Mo2(O 2C-)4-based metal-organic molecular architectures structurally controlled by the bridging angles of rigid organic linkers has been performed. Twelve bridging dicarboxylate ligands were designed to be of different sizes with bridging angles of 0, 60, 90, and 120° while incorporating a variety of nonbridging functional groups, and these ligands were used as linkers. These dicarboxylate linkers assemble with quadruply bonded Mo-Mo clusters acting as nodes to give 13 molecular architectures, termed metal-organic polygons/polyhedra with metal cluster node arrangements of a linear shape, triangle, octahedron, and cuboctahedron/anti-cuboctahedron. The syntheses of these complexes have been optimized and their structures determined by single-crystal X-ray diffraction. The results have shown that the shape and size of the resulting molecular architecture can be controlled by tuning the bridging angle and size of the linker, respectively. Functionalization of the linker can adjust the solubility of the ensuing molecular assembly but has little or no effect on the geometry of the product. Preliminary gas adsorption, spectroscopic, and electrochemical properties of selected members were also studied. The present work is trying to enrich metal-containing supramolecular chemistry through the inclusion of well-characterized quadruply bonded Mo-Mo units into the structures, which can widen the prospect of additional electronic functionality, thereby leading to novel properties.
