A Homologous Series of Alkaline Earth Phosphanides:  Syntheses, Crystal Structures, and Unusual Dynamic Behavior of (THF)nM[P{CH(SiMe3)2}(C6H4-2-CH2NMe2)]2(M = Mg, Ca, Sr, Ba)

2002 ◽  
Vol 41 (15) ◽  
pp. 3886-3893 ◽  
Author(s):  
Stuart Blair ◽  
Keith Izod ◽  
William Clegg
Keyword(s):  
Crystal Structures ◽  
Dynamic Behavior ◽  
Homologous Series ◽  
Alkaline Earth

scholarly journals Supramolecular Frameworks Based on Rhenium Clusters Using the Synthons Approach

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2662
Author(s):  
Nathalie Audebrand ◽  
Antoine Demont ◽  
Racha El Osta ◽  
Yuri V. Mironov ◽  
Nikolay G. Naumov ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Crystal Structures ◽  
Ligand Exchange ◽  
Alkaline Earth ◽  
Room Temperature ◽  
Hydration Rate ◽  
Rhenium Cluster ◽  
New Compounds ◽  
Cluster Unit

The reaction of the K4[{Re6Si8}(OH)a6]·8H2O rhenium cluster salt with pyrazine (Pz) in aqueous solutions of alkaline or alkaline earth salts at 4 °C or at room temperature leads to apical ligand exchange and to the formation of five new compounds: [trans-{Re6Si8}(Pz)a2(OH)a2(H2O)a2] (1), [cis-{Re6Si8}(Pz)a2(OH)a2(H2O)a2] (2), (NO3)[cis-{Re6Si8}(Pz)a2(OH)a(H2O)a3](Pz)·3H2O (3), [Mg(H2O)6]0.5[cis-{Re6Si8}(Pz)a2(OH)a3(H2O)a]·8.5H2O (4), and K[cis-{Re6Si8}(Pz)a2(OH)a3(H2O)a]·8H2O (5). Their crystal structures are built up from trans- or cis-[{Re6Si8}(Pz)a2(OH)a4−x(H2O)ax]x−2 cluster units. The cohesions of the 3D supramolecular frameworks are based on stacking and H bonding, as well as on H3O2−bridges in the cases of (1), (2), (4), and (5) compounds, while (3) is built from stacking and H bonding only. This evidences that the nature of the synthons governing the cluster unit assembly is dependent on the hydration rate of the unit.

scholarly journals The spectrum of beryllium fluoride

1922 ◽  
Vol 101 (709) ◽  
pp. 187-194 ◽  
Keyword(s):  
Special Reference ◽  
Homologous Series ◽  
Alkaline Earth ◽  
The Other ◽  
Empirical Equations ◽  
Molecular Weights ◽  
Beryllium Fluoride ◽  
Previous Communication

In a previous communication, an account was given of an investigation of the spectra of the fluorides of magnesium, calcium, strontium, and barium, which was undertaken with a view to determine the numerical relations existing between these spectra. It was shown that the homologous series of the different spectra can be connected by empirical equations, involving only the constants of the series equations and the molecular weights or the molecular numbers of the respective compounds. It therefore seemed desirable to extend the investigation in order to ascertain if these relations are maintained in the spectrum of beryllium fluoride. Unlike the other alkaline earth compounds, the spectra of compounds of beryllium have previously received but little attention, and it has even remained doubtful whether the well-known groups of bands between λ4426 and λ5446 belong to the element itself or to the oxide. The present investigation has special reference to the spectrum of beryllium fluoride, which has not previously been recorded.

scholarly journals Emerging piezochromism in lead free alkaline earth chalcogenide perovskite AZrS3 (A = Mg, Ca, Sr and Ba) under pressure

2020 ◽  
Vol 8 (46) ◽  
pp. 16392-16403
Author(s):  
Arnab Majumdar ◽  
Adebayo A. Adeleke ◽  
Sudip Chakraborty ◽  
Rajeev Ahuja
Keyword(s):  
Hydrostatic Pressure ◽  
Physical Properties ◽  
Crystal Structures ◽  
Alkaline Earth ◽  
Lead Free

Hydrostatic pressure is an effective tool that can give rise to novel crystal structures and physical properties.

scholarly journals X-ray Crystal Structures, Packing Behavior, and Thermal Stability Studies of a Homologous Series of n-Alkyl-Substituted Polyhedral Oligomeric Silsesquioxanes

2013 ◽  
Vol 46 (3) ◽  
pp. 988-1001 ◽  
Author(s):  
Youssef El Aziz ◽  
Alan R. Bassindale ◽  
Peter G. Taylor ◽  
Richard A. Stephenson ◽  
Michael B. Hursthouse ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Crystal Structures ◽  
Homologous Series ◽  
Polyhedral Oligomeric Silsesquioxanes ◽  
Stability Studies ◽  
X Ray

Homologous series of the PdCl2 and PtCl2 complexes of maleonitrile-dithiacrown ethers: synthesis, crystal structures, NMR spectroscopy and mass spectrometry

2001 ◽  
Vol 317 (1-2) ◽  
pp. 133-142 ◽  
Author(s):  
Hans-Joachim Drexler ◽  
Ines Starke ◽  
Manuela Grotjahn ◽  
Erich Kleinpeter* ◽  
Hans-Jürgen Holdt*
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Crystal Structures ◽  
Homologous Series
Sign in / Sign up

Export Citation Format

Share Document