ChemInform Abstract: Na₆[B₁₈Se₁₇]: The First Selenoborato‐closo‐dodecaborate with a Polymeric Chain Anion.

Abstract

structure structure (solids and liquids) D 2000 48 -009 Na 6 [B 18 Se 17 ]: The First Selenoborato-closo-dodecaborate with a Polymeric Chain Anion. -The title compound is synthesized by solid state reaction of Na 2 Se, amorphous B, and Se at 850 • C. Single crystal XRD reveals that Na 6 [B 18 Se 17 ] crystallizes in the monoclinic space group C2/c with Z = 4. The structure consists of icosahedral B 12 clusters completely saturated with trigonal-planar BSe 3 units and sodium counterions. Adjacent clusters are connected in one direction via exocyclic Se atoms forming the infinite chain anion ([B 18 Se 16 Se 2/2 ] 6− )∞. -(HAMMERSCHMIDT, A.; LINDEMANN, A.; KOESTER, C.; KREBS, B.