Neptunium(III) phosphide

Last updated
Neptunium phosphide
Identifiers
3D model (JSmol)
  • InChI=1S/Np.P
    Key: AGTDZATXHOWRTO-UHFFFAOYSA-N
  • [Np]#P
Properties
NpP
Molar mass 268 g·mol−1
Appearanceblack crystals
Density 10.06 g/cm3 [1]
insoluble
Related compounds
Related compounds
 Neptunium(IV) phosphide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Neptunium(III) phosphide is a binary inorganic compound of neptunium metal and phosphorus with the chemical formula NpP. [2]

Contents

Preparation

Neptunium(III) phosphide can be formed from the fusion of stoichiometric amounts of neptunium and phosphorus at 750 °C:[ citation needed ]

4 Np + P4 → 4 NpP

Physical properties

Neptunium(III) phosphide forms black crystals of NaCl-structure. [3] It is insoluble in water. It is antiferromagnetic below 130 K. [4] [5]

Related Research Articles

<span class="mw-page-title-main">Neptunium</span> Chemical element with atomic number 93 (Np)

Neptunium is a chemical element; it has symbol Np and atomic number 93. A radioactive actinide metal, neptunium is the first transuranic element. It is named after Neptune, the planet beyond Uranus in the Solar System, which uranium is named after. A neptunium atom has 93 protons and 93 electrons, of which seven are valence electrons. Neptunium metal is silvery and tarnishes when exposed to air. The element occurs in three allotropic forms and it normally exhibits five oxidation states, ranging from +3 to +7. Like all actinides, it is radioactive, poisonous, pyrophoric, and capable of accumulating in bones, which makes the handling of neptunium dangerous.

<span class="mw-page-title-main">Phosphine</span> Chemical compound hydrogen phosphide

Phosphine (IUPAC name: phosphane) is a colorless, flammable, highly toxic compound with the chemical formula PH3, classed as a pnictogen hydride. Pure phosphine is odorless, but technical grade samples have a highly unpleasant odor like rotting fish, due to the presence of substituted phosphine and diphosphane (P2H4). With traces of P2H4 present, PH3 is spontaneously flammable in air (pyrophoric), burning with a luminous flame. Phosphine is a highly toxic respiratory poison, and is immediately dangerous to life or health at 50 ppm. Phosphine has a trigonal pyramidal structure.

Phosphorus trifluoride (formula PF3), is a colorless and odorless gas. It is highly toxic and reacts slowly with water. Its main use is as a ligand in metal complexes. As a ligand, it parallels carbon monoxide in metal carbonyls, and indeed its toxicity is due to its binding with the iron in blood hemoglobin in a similar way to carbon monoxide.

<span class="mw-page-title-main">Phosphide</span>

In chemistry, a phosphide is a compound containing the P3− ion or its equivalent. Many different phosphides are known, with widely differing structures. Most commonly encountered on the binary phosphides, i.e. those materials consisting only of phosphorus and a less electronegative element. Numerous are polyphosphides, which are solids consisting of anionic chains or clusters of phosphorus. Phosphides are known with the majority of less electronegative elements with the exception of Hg, Pb, Sb, Bi, Te, and Po. Finally, some phosphides are molecular.

<span class="mw-page-title-main">Sodium phosphide</span> Chemical compound

Sodium phosphide is the inorganic compound with the formula Na3P. It is a black solid. It is often described as Na+ salt of the P3− anion. Na3P is a source of the highly reactive phosphide anion. It should not be confused with sodium phosphate, Na3PO4.

<span class="mw-page-title-main">Zinc phosphide</span> Chemical compound

Zinc phosphide (Zn3P2) is an inorganic chemical compound. It is a grey solid, although commercial samples are often dark or even black. It is used as a rodenticide. Zn3P2 is a II-V semiconductor with a direct band gap of 1.5 eV and may have applications in photovoltaic cells. A second compound exists in the zinc-phosphorus system, zinc diphosphide (ZnP2).

<span class="mw-page-title-main">Neptunium(IV) fluoride</span> Chemical compound

Neptunium(IV) fluoride or neptunium tetrafluoride is a inorganic compound with the formula NpF4. It is a green salt and is isostructural with UF4.

Zinc cadmium phosphide arsenide (Zn-Cd-P-As) is a quaternary system of group II (IUPAC group 12) and group V (IUPAC group 15) elements. Many of the inorganic compounds in the system are II-V semiconductor materials. The quaternary system of II3V2 compounds, (Zn1−xCdx)3(P1−yAsy)2, has been shown to allow solid solution continuously over the whole compositional range. This material system and its subsets have applications in electronics, optoelectronics, including photovoltaics, and thermoelectrics.

<span class="mw-page-title-main">Neptunium(IV) oxalate</span> Chemical compound

Neptunium (IV) oxalate is an inorganic compound, a salt of neptunium and oxalic acid with the chemical formula Np(C2O4)2. The compound is slightly soluble in water, forms crystalline hydrates—green crystals.

Neptunium arsenide is a binary inorganic compound of neptunium and arsenic with the chemical formula NpAs. The compound forms crystals.

Neptunium diarsenide is a binary inorganic compound of neptunium and arsenic with the chemical formula NpAs
2. The compound forms crystals.

Neptunium silicide is a binary inorganic compound of neptunium and silicon with the chemical formula NpSi
2. The compound forms crystals and does not dissolve in water.

Praseodymium monophosphide is an inorganic compound of praseodymium and phosphorus with the chemical formula PrP. The compound forms crystals.

Samarium(III) phosphide is an inorganic compound of samarium and phosphorus with the chemical formula SmP.

Bismuth phosphide is a proposed inorganic compound with the chemical formula BiP. The structure of this material is unknown.

Holmium phosphide is a binary inorganic compound of holmium and phosphorus with the chemical formula HoP. The compound forms dark crystals and does not dissolve in water.

Neptunium compounds are compounds containg the element neptunium (Np). Neptunium has five ionic oxidation states ranging from +3 to +7 when forming chemical compounds, which can be simultaneously observed in solutions. It is the heaviest actinide that can lose all its valence electrons in a stable compound. The most stable state in solution is +5, but the valence +4 is preferred in solid neptunium compounds. Neptunium metal is very reactive. Ions of neptunium are prone to hydrolysis and formation of coordination compounds.

Neptunium(IV) phosphide is a binary inorganic compound of neptunium metal and phosphorus with the chemical formula Np3P4.

Neptunium monocarbide is a binary compound of neptunium metal and carbon with the chemical formula NpC.

<span class="mw-page-title-main">Neptunium tetrabromide</span> Chemical compound

Neptunium tetrabromide is a binary inorganic compound of neptunium metal and bromine with the chemical formula NpBr4.

References

  1. ↑ "NpP". Materials Project . Retrieved 5 March 2024.[ unreliable source? ]
  2. ↑ Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3671. ISBN   978-0-412-30120-9 . Retrieved 5 March 2024.
  3. ↑ Richardson, J. H. (2 December 2012). Systematic Materials Analysis. Elsevier. p. 176. ISBN   978-0-323-14756-9 . Retrieved 5 March 2024.
  4. ↑ Erdos, Paul (6 December 2012). The Physics of Actinide Compounds. Springer Science & Business Media. p. 38. ISBN   978-1-4613-3581-8 . Retrieved 5 March 2024.
  5. ↑ Lander, G. H.; Dunlap, B. D.; Lam, D. J.; Harvey, A.; Nowik, I.; Mueller, M. H.; Aldred, A. T.; Wolfe, Hugh C.; Graham, C. D.; Rhyne, J. J. (1973). "Magnetic Properties of Antiferromagnetic NpP". AIP Conference Proceedings. 10 (1): 88–92. Bibcode:1973AIPC...10...88L. doi:10.1063/1.2947044 . Retrieved 5 March 2024.
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