Crystal Engineering

Abstract

Crystal engineering is the bottom‐up construction of functional materials from the assembly of molecular or ionic components. The discipline bridges supramolecular and solid‐state science. Crystal engineering is highly interdisciplinary and spans across all traditional sectors of chemistry (organic, inorganic, organometallic, biological chemistry). Beside the conventional tools of molecular and supramolecular synthetic chemistry, crystal engineering requires the utilization of solid‐state and solid–gas techniques, including theoretical and advanced crystallography methods.

High Molecular Weight Unsaturated Copolyesters Derived from Fully Biobased trans-β-Hydromuconic Acid and Fumaric Acid with 1,4-Butanediol: Synthesis and Thermomechanical Properties

“…Although the UPs possess distinctive merits, universally they leave some issues to be addressed. First, commercially available UPs were totally produced from petroleum-based monomers; for example, ∼1.7 million metric tons of maleic anhydride (MA) were yielded yearly, , and the majority of them were converted into UPs . Petroleum-based UPs caused petroleum and natural gas depletion; developing next-generation biobased alternatives to petroleum-derived UPs is significant for both ecological and sustainable considerations .…”

Organic Crystal Engineering with 1,4-Piperazine-2,5-diones. 8. Synthesis, Crystal Packing, and Thermochemistry of Piperazinediones Derived from 2-Amino-4,7-dialkoxyindan-2-carboxylic Acids

“…The field of crystal engineering − seeks an understanding of weak intermolecular associative forces and strives for rational development of materials useful for a wide range of applications, for example, liquid crystal materials − for use in optical displays. We consider the molecular framework of pentacyclic molecules 1 suitable for use in an exploration of structural effects on weak intermolecular associative forces and an appropriate scaffold for the design of compounds that could possess useful bulk properties. − The conformational freedom of such molecules is restricted, limiting the number of possible packing options.…”

Halogen-Bonded Supramolecular Assemblies Based on Phenylethynyl Pyridine Derivatives: Driving Crystal Packing through Systematic Chemical Modifications

“…Crystal design and engineering has received much attention in recent years as its implications extend well beyond material science into areas such as solid-state synthesis and drug development. – One of the most important issues in this field is the rational design and structural control of molecular packing, which affect and control the macroscopic properties of the material (e.g., electrical, optical, and electronic properties, supramolecular isomerism, and polymorphism). Hydrogen bonding, metal coordination, and aromatic noncovalent interactions have been widely exploited as directional motifs for the design and synthesis of supramolecular assemblies. – Halogen bonding (XB) is another type of noncovalent interaction, which was shown to be an effective directional tool to assemble highly ordered supramolecular architectures. , In XB, the carbon-bound halogen atom (Cl, Br, I) acts as an acceptor for the lone-pair electrons of a heteroatom (i.e., N, O, P, S).…”