TY - JOUR

T1 - Novel vanadium complexes supported by a bulky tris(pyrazolyl)borate ligand

AU - Petrov, Pavel A.

AU - Smolentsev, Anton I.

AU - Bogomyakov, Artem S.

AU - Konchenko, Sergey N.

PY - 2017/6/17

Y1 - 2017/6/17

N2 - The V(III) complex [V(Tpt Bu2)Cl2] (1, Tpt Bu2 = hydrotris(3,5-di-tert-butylpyrazolyl)borate) was synthesized by the reaction of [VCl3(THF)3] (prepared in situ) and K(Tpt Bu2). Reduction of 1 with potassium mirror afforded the V(II) complex [V(Tpt Bu2)Cl] (2). Both complexes were characterized by means of a single crystal X-ray diffraction. 1 represents the first example of pentacoordinated vanadium tris(pyrazolyl)borate (Tp) complexes. The V(III) ion environment is a distorted trigonal bipyramid. 2 is the first V(II) Tp-complex. The V(II) ion has tetrahedral environment, and the Cl atom is deviated from the B–V axis (∠B(1)–V(1)–Cl(1) = 157.8°). Magnetic susceptibility measurements showed reasonable µeff values at 300 K: 2.80 (1) and 3.78 (2) µB, those prove the oxidation states of V: +3 (1) and +2 (2).

AB - The V(III) complex [V(Tpt Bu2)Cl2] (1, Tpt Bu2 = hydrotris(3,5-di-tert-butylpyrazolyl)borate) was synthesized by the reaction of [VCl3(THF)3] (prepared in situ) and K(Tpt Bu2). Reduction of 1 with potassium mirror afforded the V(II) complex [V(Tpt Bu2)Cl] (2). Both complexes were characterized by means of a single crystal X-ray diffraction. 1 represents the first example of pentacoordinated vanadium tris(pyrazolyl)borate (Tp) complexes. The V(III) ion environment is a distorted trigonal bipyramid. 2 is the first V(II) Tp-complex. The V(II) ion has tetrahedral environment, and the Cl atom is deviated from the B–V axis (∠B(1)–V(1)–Cl(1) = 157.8°). Magnetic susceptibility measurements showed reasonable µeff values at 300 K: 2.80 (1) and 3.78 (2) µB, those prove the oxidation states of V: +3 (1) and +2 (2).

KW - Crystal structure

KW - Magnetic susceptibility

KW - Scorpionates

KW - Tris(pyrazolyl)borates

KW - Vanadium

KW - HYDROTRIS(3,5-DIMETHYLPYRAZOLYL)BORATO

KW - 1,3-DIPHENYL-1,3-PROPANEDIONATO LIGANDS

KW - STRUCTURAL-CHARACTERIZATION

KW - CRYSTAL-STRUCTURES

KW - TRIS(3,5-DI-TERT-BUTYLPYRAZOLYL)HYDROBORATO LIGATION

KW - MONONUCLEAR

KW - NEUTRON POWDER DIFFRACTION

KW - CHEMISTRY

KW - BINDING-SITE

KW - BROMOPEROXIDASE

UR - http://www.scopus.com/inward/record.url?scp=85016952875&partnerID=8YFLogxK

U2 - 10.1016/j.poly.2017.03.033

DO - 10.1016/j.poly.2017.03.033

M3 - Article

AN - SCOPUS:85016952875

VL - 129

SP - 60

EP - 64

JO - Polyhedron

JF - Polyhedron

SN - 0277-5387

ER -