Reactions of arene replacement in transition metal complexes

Aluminum Species and the Synthesis Mechanism of AlCl3–CuCl–Arene Solutions

“…23 The synthesis and catalysis of transition-metal−arene complexes were discussed in detail by Walton and Shvydkiy. 24,25 Complexes such as Hg(arene) 2 (AlCl 4 ) 2 and Ti(arene) 2 (AlCl 4 ) 2 were used in the alkylation of aromatics and alkenes 26 or alkene oligomerization, 27 respectively. However, there was little literature reporting the application of AlCl 3 −CuCl−arene solutions in chemical reactions.…”

Cobalt(II) Complexes Based on Benzylmalonate Anions Exhibiting Field-Induced Single-Ion Magnet Slow Relaxation Behavior

“…The SA-CASSCF/NEVPT2 calculations were performed with the geometry of the experimentally determined X-ray structures. The active space of the CASSCF calculations was composed of seven electrons in five d orbitals of Co 2+ ions (S = 3/2): CAS (7,5). The state-averaged approach was used, in which all 10 quartet (S = 3/2) and 40 doublets (S= 1/2) states were averaged with equal weights.…”

“…Cobalt coordination complexes exhibit redox [1,2], optical [3,4], and magnetic [5,6] properties that can be attractive for application in catalysis [7,8], biology, and medicine [9,10]. The magnetic behavior of cobalt(II) ions depends on the coordination environment, crystal field, and interaction with nearby paramagnetic ions [11].…”

Arene-Osmium(II) Complexes in Homogeneous Catalysis

“…The isolation of bis(benzene)chromium by Fischer and Hafner in the 1950s marked the starting point of a fruitful research field in organometallic chemistry devoted to study the synthesis and properties of transition-metal complexes with π-coordinated arene ligands [1], compounds that have found many applications in modern chemistry [2][3][4][5][6][7][8][9]. Among them, half-sandwich (η 6 -arene)-ruthenium(II) complexes, introduced for the first time by Winkhaus and Singer in 1967 [10], have been particularly studied given (i) the ease of access to the dimeric precursors [{RuCl(µ-Cl)(η 6 -arene)} 2 ] by dehydrogenation of cyclohexadiene derivatives with RuCl 3 •nH 2 O and (ii) the rich reactivity of these dimers which allows the facile exchange and functionalization of the coordinated arene, as well as the introduction a wide variety of mono-, bi-and tridentate P-, N-, O-, S-, or C-donor ligands in the coordination sphere of the metal by cleavage of the chloride bridges and chloride ligands substitution reactions [11][12][13][14][15][16][17].…”