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2,3‐Dihydro‐1,3‐diborole‐Metal Complexes with Activated CH Bonds: Building Blocks for Multilayered Sandwich Compounds
Author(s) -
Siebert Walter
Publication year - 1985
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198509431
Subject(s) - stacking , methylene , ring (chemistry) , metal , chemistry , nickel , thermal decomposition , atom (system on chip) , crystallography , polymer , polymer chemistry , decomposition , stereochemistry , medicinal chemistry , organic chemistry , computer science , embedded system
Derivatives of 2,3‐dihydro‐1,3‐diborole acting as four‐electron ligands form various metal complexes in which the ring‐methylene carbon atom is pentacoordinated. The resultant activation of the CH bond can be used to prepare triple‐decker to hexadecker sandwich complexes. Bis(2,3‐dihydro‐1,3‐diborole)nickel complexes undergo a spontaneous stacking and formation of tricarbahexaboranyl oligodecker complexes with stacks of 2,3‐dihydro‐1,3‐diborolylnickel. These findings finally led to the synthesis of the first polydecker sandwich complex which was obtained by vacuum thermolysis of a tris(allyl)(μ‐2,3‐dihydro‐1,3‐diborolyl)dinickel complex. The black polymer possesses remarkable semiconductor properties.