Topic
Tetrahedral molecular geometry
About: Tetrahedral molecular geometry is a research topic. Over the lifetime, 1795 publications have been published within this topic receiving 30706 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, it is inferred that the tetrahedral molecule receives not only the octahedral field at one site but also the tetric field at the other site from hcp structure in host atoms.
Abstract: M. Prager et al . have shown by inelastic neutron scattering that the methane molecules dispersed in solid argon have two sites. It is inferred that the tetrahedral molecule receives not only the octahedral field at one site but the tetrahedral field at the other site. The latter field may be contributed from hcp structure in host atoms. The crystal field analysis is made in 3rd, 4th, and 6th orders using the conventional atom-atom potentials. It is concluded that C 3v configuration is dominant in fcc lattice while T d one in hcp lattice. In addition, rotational energy levels are computed in terms of the estimated field parameters. The result is compatible with the observed neutron scattering spectra.
8 citations
Patent•
06 Apr 2006TL;DR: One embodiment of the present invention is to provide a stress-stimulated luminescent material which has a unique crystal structure and which emits conventionally unachievable intense light.
Abstract: One embodiment of the present invention is to provide a stress-stimulated luminescent material which has a unique crystal structure and which emits conventionally unachievable intense light. The stress-stimulated luminescent material of one embodiment of the present invention includes a basic structure in which a plurality of tetrahedral molecules each having an AlO4-like tetrahedral structure or an SiO4-like tetrahedral structure share atoms of apexes of the tetrahedral structures so as to be coupled to one another so that a basic material structure is formed and at least either alkali metal ions or alkali earth metal ions are inserted into the void are partially substituted by at least either rare earth metal ions or transition metal ions.
8 citations
TL;DR: In this paper, the magnetic susceptibilities of NiLX complexes were investigated in terms of the diamagnetic spin-paired ground state and low lying triplet state, and a distorted tetrahedral geometry was indicated for all the complexes except the chloro-complex.
Abstract: Nickel(II) complexes ofN-phenyl 1-2-[1-(2-pyridyl) ethylidene] hydrazinecarbothioamide (HL) of general composition [NiLX] (where X=Cl, Br, OAc or NO3 and L=deprotonated ligand) have been synthesized and characterized by elemental analysis, conductivity measurements, i. r. spectra, electronic spectra and magnetic measurements. The electronic spectra were recorded in Nujol and dimethylformamide (DMF) whereas magnetic susceptibilities were recorded in the range 80–300 K. A distorted tetrahedral geometry is indicated for all the complexes except the chloro-complex. The paramagnetic behaviour of square-planar [NiLCl] is explained in terms of an equilibrium between the diamagnetic spin-paired ground state and low lying triplet state.
8 citations
TL;DR: In this paper, the synthesis and structural characterization, and luminescence properties of two new four-coordinate gold(I) complexes containing the monodentate tri-2-furly phosphine is described.
8 citations
TL;DR: The bis(dimethylphosphino)methyl)-substituted alcohol (Me2PCH2)2CHOH (1) was prepared from the respective bis(3,5-dimethylbenzyl)phosphonium dichloride by reductive elimination of mesitylene with lithium alanate in 56% yield as discussed by the authors.
8 citations