thulium, nickel, crystal structure, single crystal method.

How to Cite

Belan, B., Dzevenko, M., Gladyshevskii, R., & Daszkiewicz, M. (2022). CRYSTAL STRUCTURE OF THE TmNi5. Ukrainian Chemistry Journal, 88(6), 121-126.


Сrystal structure of the TmNi5 compound has been investigated by means of X-ray single crystal method (Oxford Diffraction X’calibur four-circle diffractometer, MoKα radiation) for the first time: CaCu5-type structure, Pearson symbol hP6, space group P6/mmm, a = 4.8684(12), c = 3.9541(7) Å, R1 = 0.0529, wR2 = 0.1835 for 80 reflections. Similarly to intermetallic compounds with high transition metal content, atoms in the title structure have rather high coordination numbers: 20 for thulium and 12 for nickel.


Krypyakevych P.I, Gladyshevskii E.I. The compounds EuNi5, TuNi5 and LuNi5 and their crystal structures. Dopov. Akad. NaukUkr. RSR. 1966.: 769–771 [in Ukrainian].

Bayanov A.P. Enthalpies of formation of compounds of the rare earth elements, calculated on the basis of their crystal che­mistry. Inorg. Mater. 1973. 9: 858–861 [in Russian].

Rykhal' R.M., Zarechnyuk O.S., Prota­sov V.S., Romaka V.A. Isothermal sections of (thulium,lutecium)-nickel-aluminium systems in the range of 0-0.333 atomic parts of rare-earth metals at 1070 K. Dopov. Akad. NaukUkr. RSR, Ser. B. 1982. 3: 41–44 [in Ukrainian].

Vasilechko L.O., Grin Y.M., Yarmolyuk Y.P. Phase equilibria in the Tm-Ni-Ga system at 600 °C. Metally. 1995. 1: 155–159 [in Russian].

Fedyna M.F., Bodak O.I., Mokra I.R. Study of the Tm-Ni-Ge System at 670 K and 870 K. Metally. 2001. 2: 118–123 [in Russian].

Sheldrick G.M. Crystal Structure Refinement with SHELXL. ActaCrystallogr. C. 2015. 71: 3–8. 4218

Villars P., Cenzual K., Eds. Pearson’s Crystal Data: Crystal Structure Database for Inorganic Compounds (release 2018/19). ASM International®, Materials Park, Ohio (USA), 2018.

Emsley J. The Elements, 2nd ed. Clarendon Press, Oxford, 1991.

Shannon R.D. Revised Effective Ionic Radii and Systematic Studies of Interatomic Distances in Halides and Chalcogenides. J. Acta. Cryst. A. 1976. A32: 751–767. 01551


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