Crystals, Volume 6, Issue 9

Reaction of Cu(NO₃)₂·3H₂O or Cu(CH₃COO)₂·H₂O with the bis(2-hydroxyphenylimine) ligands H₂L¹-H₂L⁴ gave four Cu(II) complexes of composition [Cu₂(L¹)(NO₃)₂(H₂O)]·MeOH, [Cu₂(L²)₂], [Cu₂(L³)₂] and [Cu₂(L⁴)₂]·2MeOH. Depending on the spacer unit, the stru...

The boron (Z = 5) element is unique. Boron-based (nano-)materials are equally unique. Accordingly, the present special issue is dedicated to crystalline boron-based (nano-)materials and gathers a series of nine review and research articles dealing wi...

This article is not a review in the conventional sense. Rather, it is a monographic study of the implications of detection in Al-Cu-Fe quasicrystals of the electronic heat capacity contributions associated with the two-level electron excitations. Our...

Development of methodologies for the controlled chemical assembly of nanoparticles into plasmonic molecules of predictable spatial geometry is vital in order to harness novel properties arising from the combination of the individual components consti...

Theoretical calculation and experimental measurement have shown that twin grain boundary (GB) of molybdenum disulphide (MoS₂) exhibits extraordinary effects on transport properties. Precise transport measurements need to verify the transport mechanis...

The effects of accelerated crucible rotation technique (ACRT) and dynamic translation on liquid phase diffusion (LPD) growth of Si_xGe_1−x single crystals have been separately investigated numerically in earlier works and were found to have a very posi...

A p-tertbutylcalix[4]arene derivative was synthesized from a reaction of the diisothiocyanate p-tertbutylcalix[4]arene, obtaining crystals that were then characterized by mass spectroscopy, Raman spectroscopy, and single-crystal X-ray diffraction. Th...

Two dimensional atomic crystals, like grapheme (G) and molybdenum disulfide (MoS₂), exhibit great interest in electronic and optoelectronic applications. The excellent physical properties, such as transparency, semiconductivity, and flexibility, make...

In this work, we study the existence of coupled bandgaps for corrugated plate structures and acoustic channels. The study is motivated by the observation that the performance of traditional bandgap structures, such as periodic plates, may be compromi...

We numerically investigate the electromagnetic field localization in a two-dimensional photonic quasicrystal generated with a holographic tiling. We demonstrate that light confinement can be induced into an air mirrorless cavity by the inherent symme...

Reaction of barbituric acid derivatives and di-substituted benzaldehyde in water afforded arylidene-1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione derivatives (1 and 2). The one step reaction proceeded efficiently, smoothly, and in excellent yield. Th...

A novel eight-coordinated dinuclear Ca(II) complex, [Ca₂(L)₂(H₂O)₁₀]·H₂O (L = 4-formylbenzene-1,3-disulfonate-3-pyridinecarboxylic hydrazone) (1), was synthesized by the reaction of 3-pyridinecarboxylic hydrazide, disodium 4-formylbenzene-1,3-disulfo...

The pillared layer motif is a commonly used route to porous coordination polymers or metal organic frameworks (MOFs). Materials based on the pillared cyano-bridged architecture, [Ni’(L)Ni(CN)₄]_n (L = pillar organic ligands), also known as PICNICs, ha...

We have discovered a substantial enhancement of the piezoelectric coefficients (from 10 to 78 pm/V) in the chalcogenide Ag₂Ga₂SiS₆ single crystals. The piezoelectric studies were done under the influence of a CO₂ laser (wavelength 10.6 μm, time durat...

Chiral structures resulting from the packing of helices are common in biological and synthetic materials. Herein, we analyze the noncentrosymmetry (NCS) in such systems using crystallographic considerations. A comparison of the chiral structures buil...

In this paper, we show the fundamentals of statistical method of structure analysis. Basic concept of a method is the average unit cell, which is a probability distribution of atomic positions with respect to some reference lattices. The distribution...

Quasicrystals (QCs) possess rotational symmetries forbidden in the conventional crystallography and lack translational symmetries. Their atoms are arranged in an ordered but non-periodic way. Transmission electron microscopy (TEM) was the right tool...

Results of the study of the lateral surface of single-crystal (SC) sapphire fibers grown along crystallographic directions $\left[0001\right]$ and $\left[11\overline{2}0\right]$ by the LHPG method are presented. The appearance or absence of faceting of the la...

The three novel cadmium(II) cyanide coordination polymers with alkoxyethanols, [Cd(CN)₂(C₂H₅OCH₂CH₂OH)]_n (I), [{Cd(CN)₂(C₄H₉OCH₂CH₂OH)}₃{Cd(CN)₂}]_n (II) and [{Cd(CN)₂(H₂O)₂}{Cd(CN)₂}₃·2(C₆H₁₃OCH₂CH₂OH)]_n (III), were synthesized and charcterized by st...

The ligand exchange in (n-Bu₄N)₂Os^IVCl₆ (n-Bu₄N = tetra-n-butylammonium) leads to the formation of the osmium(IV) heptacyanide, the first fully inorganic homoleptic complex of heptacoordinated osmium. The single-crystal X-ray diffraction (SC-XRD) stu...