Notes on the size of transition-metal atoms
Abstract
We have examined, as a function of atomic number or outer-electron concentration: (1) atomic volumes of the elemental transition (T) metals and succeeding B-group elements, (2) atomic volumes of mutual solid solutions of the T metals and, (3) apparent atomic volumes of 3d T-metal solutes in T-metal solvents, pointing out features of interest and concern. Secondly, we examine, as a function of the number of d electrons, the radii of ‘divalent’, ‘trivalent’ and ‘tetravalent’ T metals in octahedral anion coordination, derived from compounds with the group-V and -VI elements, P, As, Sb, S, Se and Te. The observed T-metal radii in these pnictides and chalcogenides (both metallic and semiconducting) depend on the number and configuration of the d electrons, and on the symmetry of the anion coordination polyhedron in a manner similar to that observed by others for ionic oxides and halides. No single, simple system of T-metal radii can be suitable for deriving bond numbers in such compounds.
Articles in the same Issue
- Inclined dislocations in apophyllite crystals
- Oriented transformation of lithiophorite
- Refraktionsmodifizierte Braggsche Beugung bei asymmetrischer Durchstrahl-Reflexion
- Notes on the size of transition-metal atoms
- Crystal structure of cadmium mercuric thiocyanate, CdHg(SCN)4
- Product of the normalized intensities in a test for isomorphism using higher moments of intensities*
- The unit cell of gaylussite
- The crystal structures and infra-red spectra of barium and strontium nitrates
- A comparison of some weighted Fourier syntheses with the summation method for vector convergence
- A modification to Patterson syntheses
- Verfeinerung der Struktur des Zinkhydroxidchlorids II, Zn5(OH)8Cl2 · 1H2O
- The Z expansion of the atomic scattering factor for the helium sequence*
- The crystal structure of vauquelinite and the relationships to fornacite
- The study of polytypism in silicon carbide by x-ray diffraction topography
- The neutron-scattering amplitude of potassium
- Errata: Refinement of the structure of scandium sesquioxide
Articles in the same Issue
- Inclined dislocations in apophyllite crystals
- Oriented transformation of lithiophorite
- Refraktionsmodifizierte Braggsche Beugung bei asymmetrischer Durchstrahl-Reflexion
- Notes on the size of transition-metal atoms
- Crystal structure of cadmium mercuric thiocyanate, CdHg(SCN)4
- Product of the normalized intensities in a test for isomorphism using higher moments of intensities*
- The unit cell of gaylussite
- The crystal structures and infra-red spectra of barium and strontium nitrates
- A comparison of some weighted Fourier syntheses with the summation method for vector convergence
- A modification to Patterson syntheses
- Verfeinerung der Struktur des Zinkhydroxidchlorids II, Zn5(OH)8Cl2 · 1H2O
- The Z expansion of the atomic scattering factor for the helium sequence*
- The crystal structure of vauquelinite and the relationships to fornacite
- The study of polytypism in silicon carbide by x-ray diffraction topography
- The neutron-scattering amplitude of potassium
- Errata: Refinement of the structure of scandium sesquioxide
