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[Co 7 (μ 4 ‐O) 2 (O 2 C–CH 3 ) 8 (NCO) 2 (HNPEt 3 ) 4 ] · 2 OEt 2 , ein siebenkerniger Komplex mit vier‐, fünf‐ und sechsfach koordinierten Cobalt‐Atomen
Author(s) -
Ackermann H.,
Leo R.,
Massa W.,
Dehnicke K.
Publication year - 2000
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/(sici)1521-3749(200003)626:3<608::aid-zaac608>3.0.co;2-0
Subject(s) - cobalt , crystallography , octahedron , trigonal bipyramidal molecular geometry , chemistry , coordination sphere , crystal structure , oxygen atom , atom (system on chip) , stereochemistry , molecule , inorganic chemistry , organic chemistry , computer science , embedded system
[Co 7 (μ 4 ‐O) 2 (O 2 C–CH 3 ) 8 (NCO) 2 (HNPEt 3 ) 4 ] · 2 OEt 2 , a Seven Nuclearity Complex with Four, Five, and Sixfold Coordinated Cobalt Atoms 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, β = 103.911(10)°, R = 0.0490. [Co 7 (μ 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 μ 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.