Synthesis and Crystal Structure of Ca2Ag1.83Al0.67Ge1.50 – A Solid Solution with the NbCoB‐type structure 

Abstract The crystal structure of the new phase, Ca 2 Ag 1.83 Al 0.67 Ge 1.50(1) ( 1 ) was determined by single‐crystal X‐ray diffraction, after the compound was obtained by high temperature synthesis technique. 1 crystallizes with the NbCoB type structure in the orthorhombic space group Pmmn (no. 59) with unit cell parameters: a = 20.505(1) Å, b = 4.3807(2) Å, c = 7.2211(3) Å, V = 648.65 Å 3 (Z = 5). The structure of the title compound represent a rare intergrowth of the well known KHg 2 (or CeCu 2 ) and Fe 2 P type structures.