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Abstract
SrNi7.90(8)In5.10(8) was synthesized by induction melting of the elements in a sealed tantalum tube in a water-cooled silica sample chamber. The structure was refined on the basis of single crystal X-ray diffractometer data: Cccm, a = 1615.2(4), b = 1822.3(4), c = 1238.5(4) pm, wR2 = 0.1481, 4144F2 values and 150 variables). The striking structural motifs of the SrNi7.90In5.10 structure are one-dimensional [Ni7] cluster units (242–286 pm Ni—Ni) which are surrounded by indium atoms. The structural relationship to the other NaZn13 superstructures is discussed on the basis of a group-subgroup scheme.
Keywords: Superstructure; Intermetallics; Group-subgroup relation; Single crystal structure analysis; X-ray diffraction
Published Online: 2009-10-08
Published in Print: 2009-09
© by Oldenbourg Wissenschaftsverlag, München, Germany