Abstract
The title compound was prepared from the elements by a reaction in an arc melting furnace and subsequent annealing at 970 K. Nd5Ni6In11crystallizes with the orthorhombic Pr5Ni6In11-type structure:Cmmm,a=1455.9(3) pm,b=1453.3(3) pm,c= 438.3(1) pm,V=0.9274(2) nm3,wR2=0.0551, 1086F2values, and 42 variables. The structure of Nd5Ni6In11is built up from a complex three-dimensionally infinite [Ni6In11] polyanionic network in which the neodymium atoms occupy pentagonal and hexagonal channels. Magnetic susceptibility measurements indicate Curie–Weiss behavior above 150 K with an experimental magnetic moment of 3.60(5)μB/Nd and a paramagnetic Curie temperature of −18(1) K. Antiferromagnetic ordering is detected atTN=11.4(1) K. Field- and temperature-dependent magnetization data indicate a complex magnetic phase diagram with spin reorientations into three antiferro- and one ferrimagnetic phase. The magnetic data are supported by specific heat measurements. Nd5Ni6In11is a metallic conductor with a specific resistivity of 120 μΩ cm at room temperature.
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