New fluoride compound Na2K2NdF7 has been synthesised and obtained in the single crystal form by the Bridgman method. The crystal is cubic, space group Im3m, with lattice parameters a = 1.28283 (15) nm. In this structure Nd3+ ions reside in sites with C-4v, symmetry. Judd-Ofelt analysis of optical absorption spectra revealed that radiative lifetime of the F-4(3/2) level of Nd3+ equals to 460 mus. Measured lifetime is 2.8 mus for Na2K2NdF7 and 439 mus for Na2K2La0.99Nd0.01F7, in agreement with the calculated value. (C) 2004 Elsevier B.V. All rights reserved.