Rare antimony(iii) imidazole selone complexes: steric controlled structural and bonding aspects

Abstract

Novel antimony(III) imidazole selone complexes under a super crowded environment are reported for the first time. The super bulky selone antimony complexes, [{IPr*Se}(SbCl3)2] (1) and [IPr*Se(SbBr3)2] (2), were isolated from...

Antimony(III) Halide‐Assisted Stereospecific Coordination of Thione

“…The molecules syn‐ 1 and anti‐ 2 represent the first structurally characterized mononuclear antimony(III) imidazole thione complexes containing L 1 ligand. In contrast to known anti ‐[{(IPaul)Se}(SbCl 3 )] 2 , and syn ‐[{(IPaul)Se}(SbBr 3 )], [12] the SbCl 3 salt formed the mononuclear syn complex, while SbBr 3 formed the anti ‐conformer. Molecule 1 exist in the syn as the two CHPh 2 moieties present on the same side of the ligand in complex syn‐ 1 while the C H Ph 2 groups in anti‐ 2 exists in the anti‐arrangements.…”

“…The Menshutkin‐type interactions found in syn‐ 1 and anti‐ 2 are comparable with recently reported super bulky antimony IPr*Se complexes [IPr*Se(SbCl 3 ) 2 ] and [IPr*Se(SbBr 3 ) 2 . (CH 2 Cl 2 )] [3.3 Å to 3.8 Å] [12] . Moreover, these type of interactions were not observed in ([(IPaul)Se(SbCl 3 )] 2 and [(IPaul)Se(SbBr 3 )]).…”

“…Recently, we have reported the first antimony(III) imidazole selone complexes [{IPr*Se}(SbCl 3 ) 2 ], [{IPr*Se}(SbBr 3 ) 2 (CH 2 Cl 2 )], anti ‐[{(IPaul)Se}(SbCl 3 )] 2 and syn ‐[{(IPaul)Se}(SbBr 3 )], (IPr*Se=[1,3‐bis(2,6‐diphenylmethylphenyl)imidazole selone]; (IPaul)Se=[1,3‐bis(2,4‐methyl‐6‐diphenyl phenyl)imidazole selone]) with unusual structural and bonding features in a super crowded environment [12] . The super bulky IPr*Se depicted the unusual coordination mode with Menshutkin‐type Sb⋯ π (aryl) interactions in [{IPr*Se}(SbCl 3 ) 2 ], and [{IPr*Se}(SbBr 3 ) 2 (CH 2 Cl 2 )].…”

Highly active higher coordinated copper(i)–N-heterocyclic chalcogenone catalysed click chemistry

“…43 Nevertheless, three or four coordinated Cu(I) complexes of NHCh in [3+2] cycloaddition reactions are less explored. [44][45][46][47][48][49][50][51][52][53] Moreover, understanding the potential role of ligands and their coordination ability to influence the catalytic application of Cu(I)-NHCh is quite challenging. 24,40,43,45,54,55 Here, we report the [3+2] cycloaddition catalytic applications of neutral tri-coordinated Cu(I) complexes and cationic tetra-coordinated Cu(I) complex.…”

N‐Heterocyclic Thione‐Coordinated Dinuclear Bismuth(III) Trihalides with a Rare Geometry

“…[6][7][8][9][10][11][12][13][14][15] The chemistry of NHE ligands with p-block elements, particularly Sb and Bi, has been studied in detail. [16][17][18][19][20] The mesoionic chalcogenone (MIE) and its metal derivatives are few in comparison to traditional NHE ligands. [21,22,23] For example, the first mesoionic thione was reported in 2020.…”