NH4 +FeBr4 - • S4N4, eine Einschlußverbindung von ungeladenem S4N4 in eine ionische Wirtsverbindung

Abstract

Abstract S4N4 reacts with NH4 +FeBr4 - in benzene to give the 1:1 inclusion compound NH4 +FeBr4 - • S4N4. The dark red crystals are monoclinic, space group Cc with Z = 4 and lattice constants a = 6.430(1), b = 17.644(4), c = 12.180(2) Å , and β = 90.77(3)°. An X-ray analysis shows that the geometry of the S4N4 group is almost identical to that of crystalline tetrasulfur tetranitride. The S4N4 molecule is surrounded by ionic neigbors in such a way that the S atoms form close contacts to Br atoms of the FeBr4 - anions and the N atoms are close to the NH4 + cations.