# Bis1,3-bis(2,4,6-trimethylphenyl)-2,3-dihydro-1H-imidazol-2-ylidene]d initrosyl(tetrahydroborato-kappa(2)H,H )tungsten(0) - Zurich Open Repository and Archive

Fraga-Hernandez, J; Blacque, O; Berke, H (2011). Bis1,3-bis(2,4,6-trimethylphenyl)-2,3-dihydro-1H-imidazol-2-ylidene]d initrosyl(tetrahydroborato-kappa(2)H,H )tungsten(0). Acta Crystallographica. Section E, Structure Reports Online, 67(Part 1):M94-U996.

## 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-trimethylphenyl)imidazol-2-ylidene (IMes) carbene ligands, two NO groups and two H atoms of an eta(2)-tetrahydroborate ligand. Depending on the number of coordination sites (n) assigned to the BH4(-) ligand, the coordination geometry of the W atom may either be described as approximately trigonal-bipyramidal (n = 1) or as very distorted octahedral 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 angstrom) form one octahedral plane, with mutually trans-oriented carbene ligands. In the crystal, molecules are connected via C-H center dot center dot center dot O interactions.

## 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-trimethylphenyl)imidazol-2-ylidene (IMes) carbene ligands, two NO groups and two H atoms of an eta(2)-tetrahydroborate ligand. Depending on the number of coordination sites (n) assigned to the BH4(-) ligand, the coordination geometry of the W atom may either be described as approximately trigonal-bipyramidal (n = 1) or as very distorted octahedral 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 angstrom) form one octahedral plane, with mutually trans-oriented carbene ligands. In the crystal, molecules are connected via C-H center dot center dot center dot O interactions.

## Citations

1 citation in Web of Science®
1 citation in Scopus®

## Altmetrics

Detailed statistics

Item Type: Journal Article, refereed, original work 07 Faculty of Science > Department of Chemistry 540 Chemistry English January 2011 12 Mar 2012 17:16 05 Apr 2016 15:41 Wiley-Blackwell 1600-5368 https://doi.org/10.1107/S1600536810052426 ISI:000285628900082

Preview
Content: Published Version
Filetype: PDF
Size: 451kB
View at publisher

## TrendTerms

TrendTerms displays relevant terms of the abstract of this publication and related documents on a map. The terms and their relations were extracted from ZORA using word statistics. Their timelines are taken from ZORA as well. The bubble size of a term is proportional to the number of documents where the term occurs. Red, orange, yellow and green colors are used for terms that occur in the current document; red indicates high interlinkedness of a term with other terms, orange, yellow and green decreasing interlinkedness. Blue is used for terms that have a relation with the terms in this document, but occur in other documents.
You can navigate and zoom the map. Mouse-hovering a term displays its timeline, clicking it yields the associated documents.