Structural transformations of layered structures constructed from Cu(ii)–chloranilate monomer compounds

Abstract

Hydrogen-bond supported intercalation compounds constructed from three types of two-dimensional layers and common guests, {(Hha)[Cu(CA)(EtOH)]} (1), {(Hha)[Cu(CA)(EtOH)]} (2), and {(Hha)[Cu(CA)]} (3) (ha = hexylamine), have been synthesized and characterized. The hexylaminium cations are introduced between the anionic layers of the metal-chloranilate by not only electrostatic interactions but also hydrogen bonding interactions. These compounds show reversible EtOH adsorption and desorption accompanied by a structural transformation. With a change in the interaction between the mononuclear complexes of the host layer, the interaction between the host layer and the intercalated guest cations also changes. Moreover, the mobility and flexibility of the intercalated Hha cations enable the rearrangement of the mononuclear complexes while maintaining their layer structure. Thus, these compounds have flexibilities both in the inter- and intra-layers.

Synthesis of Heterometallic Zirconium Alkoxide Single-Source Precursors for Bimetallic Oxide Deposition

“…From the polyhedral perspective, each outer CuO 5 square-based pyramid joins the central pair of octahedra, again through one triangular face. The adoption of a distorted square pyramidal geometry for Cu 2+ containing weaker axial interactions has been seen previously in a number of other Cu 2+ complexes. , …”

“…The adoption of a distorted square pyramidal geometry for Cu 2+ containing weaker axial interactions has been seen previously in a number of other Cu 2+ complexes. 35 , 36 …”

“…The adoption of a distorted square pyramidal geometry for Cu 2+ containing weaker axial interactions has been seen previously in a number of other Cu 2+ complexes. 35,36 The adoption of two structural types, both composed of similar M 2 Zr 2 O 6 cores but with the coordinated metal ions (M n+ ) in different peripheral (1, 3, 5, and 6) or central (2 and 4) positions (type 1 and type 2, Figure 4), suggests that a combination of factors, such as ionic radii, ionic charge, and crystal field stabilization, influences the observed molecular framework. For example, while there is only a small difference in ionic radii between Li + (in 1) and Mg 2+ (in 2) (both ≈ 90 pm for octahedral coordination), 37 the key difference is the charge and charge density of the ions.…”

Thermally induced charge transfer in a quinoid-bridged linear Cu3compound

“…6 G) centered at 3514 G is reasonably attributed to the L −• radical signal. [29][30][31] Thus, one-electron transfer from Cu II -L 2− to Cu I -L −• occurs in 1. Fig.…”

Predominantly ligand guided non-covalently linked assemblies of inorganic complexes and guest inclusions

“…The strength of associations with guests and kinetics of delivery caters to understand transport and delivery of guests. Identification of stable host-assemblies from which guest can be easily removed, [143][144][145][146][147][148] search for new templates for molecular recognitions, [149][150][151][152][153] self-assembling leading to properties such as gelation, 154 will continue to be challenges. Host-guest assemblies with comparable sizes and their recognition of, for example, C 60 as guest included in metal-porphyrin 155,156 for photochemical conversion have future ahead.…”