Synthesis and Molecular and Crystal Structure of a New Tricyclic B3N4S2Si2 System

✍ Scribed by Dr. Carl Habben; Prof. Dr. Anton Meller; Dr. Mathias Noltemeyer; Prof. George M. Sheldrick

• Publisher: John Wiley and Sons
• Year: 1986
• Tongue: English
• Weight: 331 KB
• Volume: 25
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/anie.198607411

✦ Synopsis

In the crystals of (2,5-DM-DCNQI)2Cu the copper ions are arranged in chains, each surrounded by four stacks of the dicyanoquinonediimine (Fig. 3).[13] An electronic con-Fig. 3. Perspective view of the crystal structure along the cam,: the chain of copper atoms is surrounded by four stacks of 2,s-DM-DCNQI molecules (H atoms not shown). 0 =Cu, 0 =C, 0 = N . ductivity along the chain of copper ions is most unlikely because of the large Cu-Cu distance (Cu-Cu 388 pm, Cu(meta1) 256 pm). This could more likely take place along the stacks of the .n-electron systems. The copper ions apparently take on the function of a conductivity bridge between the individual stacks. The fact that no ESR signal can be recorded (very large broadening) and the high conductivity with no phase transition both point to a multidimensional c o n d ~c t o r . " ~]