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Bis[1,3-bis-(2,4,6-trimethyl-phen-yl)-2,3-dihydro-1H-imidazol-2-yl-idene]dinitros-yl(tetra-hydro-borato-κH,H')tungsten(0).

Fraga-Hernández J, Blacque O, Berke H - Acta Crystallogr Sect E Struct Rep Online (2010)

Bottom Line: In the title paramagnetic 19-electron neutral complex, [W(BH(4))(C(21)H(24)N(2))(2)(NO)(2)], the W(0) atom is coordinated by two 1,3-bis-(2,4,6-trimethyl-phen-yl)imidazol-2-yl-idene (IMes) carbene ligands, two NO groups and two H atoms of an η(2)-tetra-hydro-borate ligand.In the latter case, the coplanar NO groups and bridging H atoms (r.m.s. deviation = 0.032 Å) form one octa-hedral plane, with mutually trans-oriented carbene ligands.In the crystal, mol-ecules are connected via C-H⋯O inter-actions.

View Article: PubMed Central - HTML - PubMed

Affiliation: Institute of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland.

ABSTRACT
In the title paramagnetic 19-electron neutral complex, [W(BH(4))(C(21)H(24)N(2))(2)(NO)(2)], the W(0) atom is coordinated by two 1,3-bis-(2,4,6-trimethyl-phen-yl)imidazol-2-yl-idene (IMes) carbene ligands, two NO groups and two H atoms of an η(2)-tetra-hydro-borate ligand. Depending on the number of coordination sites (n) assigned to the BH(4) (-) ligand, the coordination geometry of the W atom may either be described as approximately trigonal-bipyramidal (n = 1) or as very distorted octa-hedral with the bridging H atoms filling two coordination positions (n = 2). In the latter case, the coplanar NO groups and bridging H atoms (r.m.s. deviation = 0.032 Å) form one octa-hedral plane, with mutually trans-oriented carbene ligands. In the crystal, mol-ecules are connected via C-H⋯O inter-actions.

No MeSH data available.


View of the title compound showing the labeling of the non-H atoms and 30% probability ellipsoids.
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Fap1: View of the title compound showing the labeling of the non-H atoms and 30% probability ellipsoids.


Bis[1,3-bis-(2,4,6-trimethyl-phen-yl)-2,3-dihydro-1H-imidazol-2-yl-idene]dinitros-yl(tetra-hydro-borato-κH,H')tungsten(0).

Fraga-Hernández J, Blacque O, Berke H - Acta Crystallogr Sect E Struct Rep Online (2010)

View of the title compound showing the labeling of the non-H atoms and 30% probability ellipsoids.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3050354&req=5

Fap1: View of the title compound showing the labeling of the non-H atoms and 30% probability ellipsoids.
Bottom Line: In the title paramagnetic 19-electron neutral complex, [W(BH(4))(C(21)H(24)N(2))(2)(NO)(2)], the W(0) atom is coordinated by two 1,3-bis-(2,4,6-trimethyl-phen-yl)imidazol-2-yl-idene (IMes) carbene ligands, two NO groups and two H atoms of an η(2)-tetra-hydro-borate ligand.In the latter case, the coplanar NO groups and bridging H atoms (r.m.s. deviation = 0.032 Å) form one octa-hedral plane, with mutually trans-oriented carbene ligands.In the crystal, mol-ecules are connected via C-H⋯O inter-actions.

View Article: PubMed Central - HTML - PubMed

Affiliation: Institute of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland.

ABSTRACT
In the title paramagnetic 19-electron neutral complex, [W(BH(4))(C(21)H(24)N(2))(2)(NO)(2)], the W(0) atom is coordinated by two 1,3-bis-(2,4,6-trimethyl-phen-yl)imidazol-2-yl-idene (IMes) carbene ligands, two NO groups and two H atoms of an η(2)-tetra-hydro-borate ligand. Depending on the number of coordination sites (n) assigned to the BH(4) (-) ligand, the coordination geometry of the W atom may either be described as approximately trigonal-bipyramidal (n = 1) or as very distorted octa-hedral with the bridging H atoms filling two coordination positions (n = 2). In the latter case, the coplanar NO groups and bridging H atoms (r.m.s. deviation = 0.032 Å) form one octa-hedral plane, with mutually trans-oriented carbene ligands. In the crystal, mol-ecules are connected via C-H⋯O inter-actions.

No MeSH data available.