sentences:  Hexagonal NiAs-type structure (space group P63/mmc, No.194, Pearson symbol hP4) with a density of 14.76 g/cm3 was reported for Ta0.9Hf0.1C0.5.In 2015 atomistic simulations predicted that a Hf-C-N material could have a melting point exceeding Ta4Hf1C5 by 200 K. This has yet to be verified by experimental evidence.