1. J. Anhaus, Z. A. Siddiqui and H. W. Roesky, Z. Naturforsh., to be submitted for publication.
2. J. Weiss and H. Martan, private communication.
3. U. Kynast, E. Conradi, U. Müller and K. Dehnicke, Z. Naturforsch., submitted for publication.
4. A. Berg, E. Conradi, U. Müller and K. Dehnicke, Angew. Chem., submitted for publication.
5. Sulfur-nitrogen anions and related compounds