Neodymium molybdate

Neodymium molybdate

Identifiers
CAS Number	13477-90-2^Y
3D model (JSmol)	Interactive image
InChI InChI=1S/3Mo.2Nd.12O/q;;;2*+3;;;;;;;6*-1 Key: YKCRURZFHCSIBB-UHFFFAOYSA-N
SMILES [Nd+3].[Nd+3].[O-][Mo](=O)(=O)[O-].[O-][Mo](=O)(=O)[O-].[O-][Mo](=O)(=O)[O-]
Properties
Chemical formula	Nd2(MoO4)3
Appearance	blue solid[1]
Solubility in water	insoluble^[citation needed]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Neodymium molybdate is an inorganic compound, with the chemical formula of Nd₂(MoO₄)₃.

Preparation

It can be prepared by reacting neodymium oxide and molybdenum trioxide at a high temperature:^[2]

Nd₂O₃ + 3MoO₃ → Nd₂(MoO₄)₃

It can also be prepared by reacting neodymium nitrate and (NH₄)₆Mo₇O₂₄, treating the obtained precipitate at a high temperature.^[1]

Properties

It reacts with sodium molybdate at a high temperature to obtain NaNd(MoO₄)₂.^[3] It reacts at roughly 350°C to 700°C with hydrogen sulfide to obtain neodymium sulfide and molybdenum disulfide.^[4] At roughly 780K to 870K, it can be reduced by hydrogen to obtain Nd₂Mo₃O₉.^[5]

References

1. Q Huang; J Xu; W Li (March 1989). "Preparation of tetragonal defect scheelite-type RE2(MoO4)3 (RE=La TO Ho) by precipitation method". Solid State Ionics. 32–33: 244–249. doi:10.1016/0167-2738(89)90228-2. Retrieved 2022-07-02.
2. Rode, E. Ya.; Lysanova, G. V.; Kuznetsov, V. G.; Gokhman, L. Z. Synthesis and physicochemical study of rare earth molybdates. Zhurnal Neorganicheskoi Khimii, 1968. 13 (5): 1295-1302. ISSN 0044-457X.
3. Mokhosoev, M. V.; Get'man, E. I.; Kokot, I. F. Double sodium-neodymium molybdates. Izvestiya Akademii Nauk SSSR, Neorganicheskie Materialy, 1969. 5 (6): 1107-1112. ISSN 0002-337X.
4. Yampol'skaya, V. V.; Serebrennikov, V. V. Interaction of rare earth molybdates with hydrogen sulfide at elevated temperatures. Tr. Tomsk. Univ., 1973. 240: 86-89. CAN80: 140751.
5. Gopalakrishnan, Jagannatha; Manthiram, Araumugam. Topochemically controlled hydrogen reduction of scheelite-related rare earth metal molybdates. Journal of the Chemical Society, Dalton Transactions: Inorganic Chemistry (1972-1999), 1981. 3: 668-672.