Complexes of heteroscorpionate trispyrazolylborate anionic ligands. Part V. X-ray crystallographic studies of cobalt(II) complexes with hydrobis(3,5-dimethylpyrazolyl)(3,5-diphenylpyrazolyl)borate and hydrobis(3,5-diphenylpyrazolyl)(3,5-dimethylpyrazolyl)borate ligands

Ruman, Tomasz; Ciunik, Zbigniew; Goclan, Anna; Łukasiewicz, Marta; Wołowiec, Stanisław

doi:10.1016/s0277-5387(01)00911-1

Cited by 17 publications

(9 citation statements)

References 8 publications

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“…The sixth coordination site is then often occupied by the borohydride atom of the κ 2 ‐bound Tp ligand resulting in a weak interaction between hydrogen atom and metal (see B in Figure 1). This kind of M⋅⋅⋅HB bond is known also from other polypyrazolyl borate ligand combinations, e. g. both from homoleptic [(Bp R,R’ ) 2 M] complexes [14–19] and mixed ligand [(Bp R,R’ )(Tp R’’;R’’’ )M] systems [13,20−22] involving cobalt(II) and other late‐transition metal ions. In some complexes, these distances are quite short and the coordination might as well be considered as octahedral.…”

Section: Introduction and Reviewmentioning

confidence: 80%

Versatile Coordination Behavior of the Asymmetric Bis(3‐mesityl‐pyrazol‐1‐yl)(5‐mesitylpyrazol‐1‐yl) Hydroborate Ligand towards Late 3 d M²⁺ Ions

et al. 2020

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Bearing in mind the potential which tris(pyrazolyl) hydroborate ligands have demonstrated in various different fields of coordination chemistry, the behavior of a more rarely employed representative, namely bis(3‐mesitylpyrazol‐1‐yl)(5‐mesitylpyrazol‐1‐yl) hydroborate (TpMes,H*), towards a series of divalent metal ions has been investigated. Thus, the synthesis of two new heteroleptic metal chlorido [TpMes,H*MCl] complexes, 2, (Mn2+, 2‐a, and Cu2+, 2‐e) are described, which correspond to the typical precursor compounds that would be needed for subsequent research. Structural and spectroscopic properties of the two new and four published members of this series (M=Fe2+, 2‐b, Co2+, 2‐c, Ni2+, 2‐d, Zn2+, 2‐f) are discussed in detail for the solid and solution states. Furthermore, synthetic routes to five homoleptic [(TpMes,H*)2M] complexes, 3, bearing Mn2+, 3‐a, Fe2+, 3‐b, Co2+, 3‐c, Ni2+, 3‐d, and Cu2+, 3‐e, ions as well as an alternative preparation method for [(κ2‐TpMes,H*)2Zn], 3‐f, are described. Their structures and spectroscopic parameters are compared to those of their heteroleptic counterparts. Additionally, the complex [(TpH,Mes*)2Cu], 4, is reported, representing the second example of a complex with the (3‐mesitylpyrazol‐1‐yl)bis(5‐mesitylpyrazol‐1‐yl) hydroborate ligand (TpH,Mes*).

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Section: Introduction and Reviewmentioning

confidence: 80%

Versatile Coordination Behavior of the Asymmetric Bis(3‐mesityl‐pyrazol‐1‐yl)(5‐mesitylpyrazol‐1‐yl) Hydroborate Ligand towards Late 3 d M²⁺ Ions

et al. 2020

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“…A number of cobalt(II) complexes containing mixed bis (Bp)-and tris pyrazolylborates (Tp) and C-H•••Co agostic interactions have been reported, with H•••Co distances ranging from 2.03 Å (Ruman et al, 2002), 2.035 Å (Ruman et al, 2001) to 2.334 Å (Siemer et al, 2001). The H•••Co distance in (I), 2.12 (3) Å, lies between these two extremes.…”

Section: S1 Commentmentioning

confidence: 99%

A second monoclinic polymorph of {bis[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}{tris[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}cobalt(II): a structure containing a B—H...Co agostic interaction

Stibrany

Potenza

2011

Acta Cryst E

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The title compound, [Co(C10H10BF6N4)(C15H13BF9N6)], is a polymorph of the previously reported neutral cobalt(II) complex [Stibrany & Potenza (2010 ▶). Acta Cryst. E66, m506–m507], which contains one each of the monoanionic ligands, bis[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borate (Bp) and tris[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borate (Tp). A distorted octahedral coordination geometry of the CoII atom results from ligation of an H atom, which is part of an agostic B—H⋯Co interaction [H⋯Co = 2.12 (3) Å], and by five imine N atoms, two from a Bp ligand and three from a Tp ligand. Weak intra- and intermolecular C—F⋯π interactions with F⋯centroid distances ranging from 3.025 (4) to 3.605 (4) Å are observed.

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“…Copper and cobalt complexes utlizing the title ligand have been prepared for oxidation studies, see: Gorun et al (2000). For agostic interactions, see: Ruman et al (2001Ruman et al ( , 2002; Siemer et al (2001); Ghosh et al (1998).…”

Section: Related Literaturementioning

confidence: 99%

“…Copper and cobalt complexes utlizing the title ligand were prepared for oxidation studies (Gorun et al, 2000). (Ruman et al, 2002), 2.035 Å (Ruman et al, 2001) to 2.334 Å (Siemer et al., 2001). The H•••Co distance in (I), 2.17 Å, lies between these two extremes.…”

Section: Tablementioning

confidence: 99%

{Bis[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}{tris[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}cobalt(II): a structure containing a B—H...Co agostic interaction

Stibrany

Potenza

2010

Acta Cryst E

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Key indicators: single-crystal X-ray study; T = 100 K; mean (C-C) = 0.003 Å; R factor = 0.039; wR factor = 0.108; data-to-parameter ratio = 14.7.The title compound, [Co(C 10 H 10 BF 6 N 4 )(C 15 H 13 BF 9 N 6 )], is a neutral Co II complex which contains one each of the anionic ligands, bis(3-trifluoromethyl-5-methylpyrazol-1-yl)borate (Bp) and tris(3-trifluoromethyl-5-methylpyrazol-1-yl)borate (Tp). A distorted octahedral coordination geometry results from ligation of an H atom, which is part of an agostic B-HÁ Á ÁCo interaction (HÁ Á ÁCo = 2.17 Å ), and by five imine N atoms, two from a Bp ligand and three from a Tp ligand. In the crystal, molecules form layers parallel to the (101) planes, and the layers are linked along the a axis by C-HÁ Á ÁF hydrogen bonds. An intramolecular C-HÁ Á ÁF interaction also occurs. Related literature

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Complexes of heteroscorpionate trispyrazolylborate anionic ligands. Part V. X-ray crystallographic studies of cobalt(II) complexes with hydrobis(3,5-dimethylpyrazolyl)(3,5-diphenylpyrazolyl)borate and hydrobis(3,5-diphenylpyrazolyl)(3,5-dimethylpyrazolyl)borate ligands

Cited by 17 publications

References 8 publications

Versatile Coordination Behavior of the Asymmetric Bis(3‐mesityl‐pyrazol‐1‐yl)(5‐mesitylpyrazol‐1‐yl) Hydroborate Ligand towards Late 3 d M²⁺ Ions

Versatile Coordination Behavior of the Asymmetric Bis(3‐mesityl‐pyrazol‐1‐yl)(5‐mesitylpyrazol‐1‐yl) Hydroborate Ligand towards Late 3 d M²⁺ Ions

A second monoclinic polymorph of {bis[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}{tris[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}cobalt(II): a structure containing a B—H...Co agostic interaction

{Bis[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}{tris[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}cobalt(II): a structure containing a B—H...Co agostic interaction

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Complexes of heteroscorpionate trispyrazolylborate anionic ligands. Part V. X-ray crystallographic studies of cobalt(II) complexes with hydrobis(3,5-dimethylpyrazolyl)(3,5-diphenylpyrazolyl)borate and hydrobis(3,5-diphenylpyrazolyl)(3,5-dimethylpyrazolyl)borate ligands

Cited by 17 publications

References 8 publications

Versatile Coordination Behavior of the Asymmetric Bis(3‐mesityl‐pyrazol‐1‐yl)(5‐mesitylpyrazol‐1‐yl) Hydroborate Ligand towards Late 3 d M2+ Ions

Versatile Coordination Behavior of the Asymmetric Bis(3‐mesityl‐pyrazol‐1‐yl)(5‐mesitylpyrazol‐1‐yl) Hydroborate Ligand towards Late 3 d M2+ Ions

A second monoclinic polymorph of {bis[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}{tris[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}cobalt(II): a structure containing a B—H...Co agostic interaction

{Bis[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}{tris[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}cobalt(II): a structure containing a B—H...Co agostic interaction

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Versatile Coordination Behavior of the Asymmetric Bis(3‐mesityl‐pyrazol‐1‐yl)(5‐mesitylpyrazol‐1‐yl) Hydroborate Ligand towards Late 3 d M²⁺ Ions

Versatile Coordination Behavior of the Asymmetric Bis(3‐mesityl‐pyrazol‐1‐yl)(5‐mesitylpyrazol‐1‐yl) Hydroborate Ligand towards Late 3 d M²⁺ Ions