Related Experiment Video
Updated: May 31, 2026
08:23
Niobium Oxide Films Deposited by Reactive Sputtering: Effect of Oxygen Flow Rate
Published on: September 28, 2019
Neodymium(III) molybdenum(VI) borate, NdBO(2)MoO(4)
Peter Held1, Benjamin van der Wolf, Ladislav Bohatý
1Institut für Kristallographie, Universität zu Köln, Greinstrasse 6, D-50939 Köln, Germany.
Summary
Single crystals of neodymium borate molybdate (NdBO(2)MoO(4)) were synthesized. The crystal structure reveals unique arrangements of neodymium, boron, and molybdenum polyhedra, forming layered structures.
Area of Science:
- Solid State Chemistry
- Crystallography
- Materials Science
Background:
- Understanding the synthesis and structure of novel inorganic compounds is crucial for materials discovery.
- Neodymium (Nd), Boron (B), and Molybdenum (Mo) based compounds exhibit diverse properties.
- Flux growth is a common method for obtaining high-quality single crystals of complex oxides.
Purpose of the Study:
- To synthesize single crystals of a novel neodymium borate molybdate compound.
- To elucidate the crystal structure of NdBO(2)MoO(4).
- To characterize the arrangement of polyhedral units within the crystal lattice.
Main Methods:
- Single crystal growth using a molybdenum oxide-boron oxide flux.
- X-ray diffraction analysis to determine the crystal structure.
- Analysis of polyhedral coordination and connectivity.
Main Results:
- Single crystals of NdBO(2)MoO(4) were successfully synthesized.
- The crystal structure features double chains of distorted [NdO(10)] bicapped square-anti-prisms.
- These chains are linked by isolated [MoO(4)] tetrahedra and zigzag [BO(3)] groups, forming layered structures parallel to the bc plane.
Conclusions:
- The synthesis and structural characterization of NdBO(2)MoO(4) provide new insights into rare-earth borate molybdates.
- The unique layered arrangement of polyhedra suggests potential for interesting physical properties.
- This study contributes to the fundamental understanding of complex inorganic crystal structures.
Related Concept Videos
02:42Valence Bond Theory
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
03:26Electron Configuration of Multielectron Atoms
The alkali metal sodium (atomic number 11) has one more electron than the neon atom. This electron must go into the lowest-energy subshell available, the 3s orbital, giving a 1s22s22p63s1 configuration. The electrons occupying the outermost shell orbital(s) (highest value of n) are called valence electrons, and those occupying the inner shell orbitals are called core electrons. Since the core electron shells correspond to noble gas electron configurations, we can abbreviate electron...
02:55Exceptions to the Octet Rule
Many covalent molecules have central atoms that do not have eight electrons in their Lewis structures. These molecules fall into three categories:
01:16Other Nuclides: 31P, 19F, 15N NMR
Many organic, inorganic, and biological molecules contain spin-half nuclei such as nitrogen-15, fluorine-19, and phosphorus-31. As a result, NMR studies of these nuclei have found extensive applications in chemical and biological research.
While fluorine-19 and phosphorous-31 have high natural abundances (100%) and positive gyromagnetic ratios, nitrogen-15 has a low natural abundance and a negative gyromagnetic ratio. However, nitrogen-15 is still preferred over nitrogen-14 (which has a high...
While fluorine-19 and phosphorous-31 have high natural abundances (100%) and positive gyromagnetic ratios, nitrogen-15 has a low natural abundance and a negative gyromagnetic ratio. However, nitrogen-15 is still preferred over nitrogen-14 (which has a high...
02:58Properties of Transition Metals
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
03:02Colors and Magnetism
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.