A 20-Å-Thick Interwoven Sheet Consisting of Nanotubes

Abstract

Slow diffusion of AgNO3 with Me2Si(4-Py)2 yields an interwoven 2-nm-thick sheet consisting of the building block [Ag3(Me2Si(4-Py)2)4](NO3)3.H2O. The interweaving induces unique nanotunnels with a 16 x 18 A2 cross section with a 7 x 8 A2 square pore. The anion NO3- of the skeletal sheet can be reversibly exchanged with appropriately sized anions without the collapse of its structural integrity. The compound has a melting point (140 degrees C) and exists as the first 2D ionic liquid up to 193 degrees C.

Polyatomic anion versus acetonitrile in coordinating ability: structural properties of AgX-bearing 1,4-bis(2-isonicotinoyloxyethyl)piperazine (X− = NO3 −, CF3SO3 −, ClO4 −, BF4 −, and PF6 −)

“…However, precise control of coordination geometry via (counter)anions remains a rare achievement, due to less effective electrostatic binding interactions. Our previous results on silver(I) complexes revealed a variable skeletal structure, labile anion exchange [4,5], and a variety of silver(I) coordination geometries [24]. In the present study, for the purposes of elucidating the direct role and coordinating nature of polyatomic anions, the self-assembly of an AgX (X -= NO 3 -, CF 3 SO 3 -, ClO 4 -, BF 4 -, and PF 6 -) series with 1,4-bis(2-isonicotinoyloxyethyl)piperazine (bip) as a function of the polyatomic anions and temperature was investigated.…”

“…Fascinating diverse coordination skeletons have been designed and constructed via the self-assembly of basic components with varied properties such as metal center geometry, the binding sites of donating atoms and the lengths of spacers, and/or by the induction of weak intra-or intermolecular interactions [1][2][3][4][5]. Research on the rational design of coordination polymers is a fruitful field: polymers have various potential applications in molecular separation, toxic materials adsorption, molecular containers, ion exchangers, molecular recognition, and luminescent sensors [6][7][8][9][10].…”

Synthesis, Structures, and Catalytic Properties of Ionic Metallacyclodimeric Palladium(II) Complexes

“…[11][12][13][14][15] The silicon-containing pyridyl spacer ligands have been found to be useful for the synthesis of target skeletons since they are adjustable in bridging ability and length, possess flexible angles around silicon, and are conformationally nonrigid. [16][17][18][19][20] Certainly, some palladium(II) complexes have been known to be very good catalysts for various organic reactions. 21 Nonetheless, the catalytic reaction of well-defined metallamacrocycles remains an important issue with regard to the development of advanced materials.…”

Coordination Polymers Consisting of Unusual Motifs. Synthesis and Properties of Silver(I) and Copper(II) Complexes of Triethanolaminetriisonicotinate

“…In this context, recently, we have demonstrated that various pyridyl ligands are useful tectonics for desirable functional coordination materials. [21][22][23][24][25][26][27][28] Since conformationally nonrigid organic ligands were used to obtain unusual motifs, we have been interested in the design and synthesis of metal complexes of conformationally nonrigid pyridyl ligands. 29,30 In order to expand the chemistry, metal complexes containing triethanolaminetriisonicotinate have been prepared and characterized.…”