On the Study of Ca and Mg Deintercalation from Ternary Tantalum Nitrides.

Layered CaTaN and MgTaN and cubic MgTaN were prepared by direct solid state reaction from the binary nitrides TaN and AN (A: Mg, Ca). CaTaN showed a slight Ca deficiency (0.11 moles per formula), and a monoclinic distortion from previously reported 3̅ symmetry, with space group 2/ and cell parameters = 5.