A new synthetic route to Se2NOl3 leading to a new modification of this chloride nitride of trivalent selenium

✍ Scribed by Matthias Broschag; Inis C. Tornieporth-Oetting; Thomas M. Klapötke; Claudia M. Rienäcker; Peter S. White

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 388 KB
• Volume: 7
• Category: Article
• ISSN: 1042-7163
• DOI: 10.1002/(sici)1098-1071(199605)7:3<195::aid-hc6>3.0.co;2-9

✦ Synopsis

Se2NC1, was prepared in 58% yield by the reaction of SeCl, with Se,[N(SiMe,)J,. This method provides a new and convenient one-day and one-pot synthesis for the preparation of this neutral chbronitride of trivalent selenium. The low-temperature structure was determined by a single-crystal X-ray diffraction analysis. The compound crystallizes in the monoclinic space group P 2,/a with 2 = 4 and unit cell dimensions a = 7.605( 3), b = 8.7643( 20), c = 8.966(3) A, and p = 93.23(3)". The structure is made up of essentially planar Se,NCl, molecules (C2v symmetry) that are packed in a coplanar fashion to form one-dimensional chains. There are strong intermolecular interactions with short intermolecular Se.,,Se distances of 3.82 A, which is significantly shorter than the sum of the covalent radii (4.0 A). This explains the golden color and the metallic luster of this compound. Se2NC13 was first reported in 1992 by K. Dehnicke et al. to form trans-~~ ~~ Dedicated to Professor Kurt Dehnicke on the occasion of his *To whom correspondence should be addressed. sixty-fifth birthday.

parent red crystals (orthorhombic, space group P bca, a = 12.290( 6), b = 8.046(4), c = 24.336(12) A) without significant intermolecular interactions (Se..Se, 4. I 0 A). Therefore, Se,NC13 is polymorphic, crystallizing either in the orthorhombic or in the monoclinic system.