Anion Influence in Directing and Altering the Stereochemistry of the Double [2+2] Reaction of Bis‐Pyridyl Dienes in their Silver Complexes: A Green Synthetic Route

Abstract

Getting selectively organized: Molecules of bis‐pyridyl dienes have been stereoselectively photodimerized to form their strained double [2+2] reaction products by using argentophilic forces (see scheme). A pronounced influence of anions and the efficiency of a mechanochemical synthesis have also been described.

Photochemical Reactions in Supramolecular Assemblies of Gels: Dimerizations and Polymerizations via Pericyclic Reactions

“…Notably, very recently the solid state [2 + 2] single crystal to single crystal (SCSC) photopolymerizations in organic and metal-organic materials have been re-ported. [28,[66][67][68][69][70][71][72][73][74][75][76][77][78][79][80] The extension of these strategies of solid state to gel state may result in novel functional polymers in future.…”

Novel Linear Bis-Crown Receptors with Cross-Conjugated and Conjugated Central Cores

“…[29] PCA itself and its stereoselectivity can be controlled by supramolecular preorganization of double bonds, to create the most suitable geometry of the starting dimer. [30][31][32][33][34] We have previously shown that bis-crown stilbenes can form unusual bi-and exotic trimolecular complexes in the reaction with diammonioalkyl derivatives of viologen or cyanine dyes, [35][36] due to the formation of a system of hydrogen bonds. Owing to the spatial preorganization of the donor and acceptor regions of supermolecules, an effective intermolecular charge transfer has been observed in the complexes produced.…”

Conformation driven complexation of two analogous benzimidazole based tripodal ligands with Ag(I) resulting in a trigonal prism and a coordination polymer

“…In the synthesis of coordination complexes involving metals, the primary challenge is to understand the coordination capacity and the coordination geometry of the metal involved, followed by designing of suitable ligands in accordance to the coordination geometry. The ever-expanding library of coordination complexes, [1][2][3][4][5] metal-organic frameworks, [6][7][8][9][10] metal clusters, [11][12][13][14][15] coordination polymers [16][17][18][19][20][21][22] and intermetallic composites, [23][24][25][26][27] are evidences of the extent to which the phenomenon of metal-coordination could be exploited in order to synthesize complicated architectures with greater structural certainty.…”