Synthesis and structural characterization of a new class of organoborato ligands containing imidazolyl functional groups [MeB(ImN-Me)2(X)]−

Deboronation and Deprotonation of ortho‐Carborane with N‐Heterocyclic Carbenes

“…[15] The C 2 B 9 -cage cluster frameworks in the crystal structures of 3 and 5 [10] are similar to those in other 10-L-7,8-C 2 B 9 H 11 compounds [12,15] with bridging hydrogen atoms between B9 and B10 on the open face. There are few structural examples involving a boron atom attached to two carbene groups with B À CA C H T U N G T R E N N U N G (carbene) bond lengths of 1.60- 1.64 , [16] which are similar to the values of 1.634(2) and 1.614(2) determined for 5. When a more bulky NHC, 1,3-di-tert-pentylimidazol-2-ylidene (6), was used, after work up involving isopropanol, the imidazolium salt of nido-7,8-C 2 B 9 H 12 À (7) and recovered ortho-carborane were isolated (Scheme 2).…”

A pseudotetrahedral nickel(II) complex with a tridentate oxazoline-based scorpionate ligand: chlorido[tris(4,4-dimethyloxazolin-2-yl)phenylborato]nickel(II)

“…Some scorpionate ligands with boron-carbon bonds, rather than the normal boron-nitrogen bonds, had appeared after the mid-1990s (Pettinari, 2008). In such new types of scorpionate ligands, amines (Betley & Peters, 2002) and azoles, such as pyridines (Hodgkins & Powell, 1996;Khaskin et al, 2006), imidazoles (Fujita et al, 2000) and oxazolines (Mazet et al, 2005;Dunne et al, 2008), have been employed as N-donors instead of pyrazoles. Furthermore, a variety of bis-and tris-(oxazolinyl)borate ligands, including chiral ones, have been developed because various oxazoline derivatives are available.…”

Design, Synthesis, and Catalysis of Bio-inspired Immobilized Metallocomplex Catalyst

“…All manipulations for the preparation of catalysts were performed under argon by using glove box or standard Schlenk techniques. A chlorinated borate compound, {H 2 [B(Im N-Me ) 2 ClMe]}Cl (L Cl ), which is a starting material for the ligand used in this work was prepared according to the previously reported procedure [13] …”

“…As we reported previously, the bis(imidazoly)borate ligands showed high affinity toward H ? and formed the hydrogen-bonding network [13]. In the case of SiO 2 L , therefore, the protonated form of L would interact with support surface (Fig.…”