Iron, copper, and cobalt complexes of hydrotris(3-phenylpyrazolyl)borate and dihydrobis(3-phenylpyrazolyl)borate. Synthesis and X-ray crystallographic characterization

Scorpionato Halide Complexes [(TpPh,Me)Ni–X] [X = Cl, Br, I; TpPh,Me = Hydrotris(3‐phenyl‐5‐methyl‐1‐pyrazolyl)borate]: Structures, Spectroscopy, and Pyrazole Adducts

“…Consistent with tridentate scorpionate coordination, [53] ν(B-H) modes were observed at 2544-2547 cm -1 . [43][44][45][46][48][49][50][51] The ν(D-H) frequencies that arise from the D-H···A interactions correlate to the D···A separation for a wide range of donor-acceptor pairs. However, the adducts exhibit ν(B-H) modes at 2532-2536 cm -1 , downshifted from those of [(Tp Ph,Me )-Ni-X].…”

“…However, the adducts exhibit ν(B-H) modes at 2532-2536 cm -1 , downshifted from those of [(Tp Ph,Me )-Ni-X]. [43][44][45][46][48][49][50] (Table S2 in the Supporting Information). [43][44][45][46][48][49][50][51] The ν(D-H) frequencies that arise from the D-H···A interactions correlate to the D···A separation for a wide range of donor-acceptor pairs.…”

“…The adducts also display unique peaks at 3224 cm -1 (X = Cl), and 3218 and 3233 cm -1 (X = I), assigned to the N2-H···X hydrogen-bonding interaction (Table S2). [43][44][45][46][48][49][50] The data point represented by the open circle (᭺) [50] (RODHEX. [54,55] We find an empirically linear correlation (r 2 = 0.91) for pentacoordinate [(Tp 3R,5R )M(Hpz 3R,5R )(Cl)] complexes ( Figure 4 and Table S2 in the Supporting Information).…”

“…[43][44][45][46][48][49][50][51] The ν(D-H) frequencies that arise from the D-H···A interactions correlate to the D···A separation for a wide range of donor-acceptor pairs. cif) [24,25] was excluded from the linear regression owing to the effects of an intermolecular contact to lattice solvent (see the unsolvated pseudo-polymorph, [49] IDACAR.cif). [43][44][45][46][48][49][50] (Table S2 in the Supporting Information).…”

Oxidation of nitrogen monoxide by oxoiron(IV) complexes

“…Since 1-OAc is a five-coordinate complex, the τ parameter can be calculated, which is a measurement of trigonality within the compositional range between square pyramidal (τ = 0) and trigonal bipyramidal (τ = 1) geometries. 77 The value of τ is 93 and polydentate amine ligands. [94][95][96] Structures of bidentate nitratoiron complexes are also supported by polydentate ligands which include porphyrins, [97][98][99] salen ligands, [100][101][102] triazine ligands, [103][104] and an oxydiacetato ligand.…”