[Co7(μ4-O)2(O2C–CH3)8(NCO)2(HNPEt3)4] · 2 OEt2, ein siebenkerniger Komplex mit vier-, fünf- und sechsfach koordinierten Cobalt-Atomen

✍ Scribed by H. Ackermann; R. Leo; W. Massa; K. Dehnicke

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: German
• Weight: 76 KB
• Volume: 626
• Category: Article
• ISSN: 0372-7874
• DOI: 10.1002/(sici)1521-3749(200003)626:3<608::aid-zaac608>3.0.co;2-0

✦ Synopsis

The title compound was prepared from cobalt(II) acetate with Me 3 SiNPEt 3 at 180 °C and subsequent crystallization from diethylether to give blue, moisture sensitive single crystals, which were characterized by a crystal structure determination. Space group P2 1 /n, Z = 2, lattice dimensions at ±80 °C: a = 1544.0( 1), b = 1522.1(2), c = 1702.0(1) pm, b = 103.911(10)°, R = 0.0490. [Co 7 (l 4 -O) 2 (O 2 C±CH 3 ) 8 (NCO) 2 (HNPEt 3

) 4 ] has a centrosymmetric cluster-like structure in which the octahedrally coordinated central cobalt atom is connected with the remaining six cobalt atoms via two l 4 -oxygen atoms as well as via four bridging acetato groups to form a Co(Co) 6 octahedral skeleton. Four of the peripheric cobalt atoms have a distorted trigonal-bipyramidal coordination sphere, the other two cobalt atoms are tetrahedrally coordinated. The latter are connected with the nitrogen atoms of the cyanato groups.