Issue 13, 2014

Synthesis and structural characterization of 14-vertex germa-, stanna-, and plumba-carboranes

Abstract

This article reports the synthesis and structures of several 14-vertex germa-, stanna-, and plumba-carboranes of the MC2B11 system. The reaction of GeCl2·dioxane, SnCl2 or Pb(OAc)2 with [8,9-(CH2)3-8,9-C2B11H11][Na2] in THF gave, after recrystallization from bidentate ligands such as bipyridine, 4,4′-dimethyl-2,2′-bipyridine, phenantroline and 1,2-bis(diphenylphosphino)ethane (dppe), eight 14-vertex p-block metallacarboranes 2,3-(CH2)3-1-(2′,2′′-bipyridine)-1,2,3-GeC2B11H11 (1), 2,3-(CH2)3-1-(4′,4′′-dimethyl-bipyridine)-1,2,3-GeC2B11H11 (2), 2,3-(CH2)3-1-(1′,10′-phenantroline)-1,2,3-GeC2B11H11 (3), 2,3-(CH2)3-1-(2′,2′′-bipyridine)-1,2,3-SnC2B11H11 (4), 2,3-(CH2)3-1-(4′,4′′-dimethyl-bipyridine)-1,2,3-SnC2B11H11 (5), 2,3-(CH2)3-1-(1′,10′-phenantroline)-1,2,3-SnC2B11H11 (6), 2,3-(CH2)3-1-(dppe)-1,2,3-SnC2B11H11 (7) and 2,3-(CH2)3-1-(2′,2′′-bipyridine)-1,2,3-PbC2B11H11 (8) in high isolated yields. Single-crystal X-ray analyses reveal that they adopt a distorted-bicapped-hexagonal antiprism geometry, in which the p-block metal atom slips away from the above center of the C2B4 bonding face towards the boron side, leading to an η4 bonding mode. The results suggest that [nido-8,9-(CH2)3-8,9-C2B11H11]2− is a redox inactive species and a good π-ligand for transition metals and p-block elements.

Graphical abstract: Synthesis and structural characterization of 14-vertex germa-, stanna-, and plumba-carboranes

  • This article is part of the themed collection: Carboranes

Supplementary files

Article information

Article type
Paper
Submitted
02 Sep 2013
Accepted
14 Oct 2013
First published
28 Oct 2013

Dalton Trans., 2014,43, 4986-4992

Synthesis and structural characterization of 14-vertex germa-, stanna-, and plumba-carboranes

F. Zheng and Z. Xie, Dalton Trans., 2014, 43, 4986 DOI: 10.1039/C3DT52406J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements