<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The new compound Cs<sub>7</sub>Nd<sub>11</sub>(SeO<sub>3</sub>)<sub>12</sub>Cl<sub>16</sub> is prepared by reaction of a 1:1:3.6 mixture of SeO<sub>2</sub>, NdOCl, and CsCl (evacuated silica tube, 1.</p> </abstract>