RE4[P1-x(C2)x]3 (RE = La-Nd): The mixed anionic substructure formed by phosphorus and carbon

Pavel S. Chizhov, Walter Schnelle, Ulrich Burkhardt, Marcus Schmidt, Yurii Prots, Evgeny V. Antipov, Yuri Grin

Research output: Contribution to journalArticlepeer-review


The rare-earth phosphide carbides RE4[P1-x(C 2)x]3 (RE = La, Ce, Pr, Nd) represent the first example of a mixed anionic substructure formed by phosphorus and carbon, being the first step toward the formation of the mixed inorganic P-C species. The peculiarities of the crystal structure, magnetic properties, XAS data, and quantum chemical calculation results confirm the ionic nature of the interaction beween the rare-earth cations RE and phosphorus anions, while complex interaction of π states of the C2 anions and d (and/or f) states of the RE components is indicated. Thus, despite the extensive chemical analogy between the phosphide carbides and phosphide suicides, the atomic interactions stabilizing the structural motif are slightly different.

Original languageEnglish
Pages (from-to)1318-1325
Number of pages8
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Issue number7
Publication statusPublished - Jul 2010
Externally publishedYes


  • Anionic substructure
  • Carbon
  • Electron localizability indicator
  • Phosphorus
  • Rare-earth metals


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