HAlCl2 and H2AlCl as Precursors for the Preparation of Compounds with Four- and Five-Coordinate Aluminum

Mingdong Zhong; Yashuai Liu; Subrata Kundu; Nico Graw; Jiancheng Li; Zhi Yang; Regine Herbst-Irmer; Dietmar Stalke; Herbert W Roesky

doi:10.1021/acs.inorgchem.9b02001

HAlCl₂ and H₂AlCl as Precursors for the Preparation of Compounds with Four- and Five-Coordinate Aluminum

Inorg Chem. 2019 Aug 19;58(16):10625-10628. doi: 10.1021/acs.inorgchem.9b02001. Epub 2019 Aug 7.

Authors

Mingdong Zhong¹, Yashuai Liu^{1

2}, Subrata Kundu¹, Nico Graw¹, Jiancheng Li^{1

3}, Zhi Yang², Regine Herbst-Irmer¹, Dietmar Stalke¹, Herbert W Roesky¹

Affiliations

¹ Institut für Anorganische Chemie , Georg-August-Universität , Tammannstrasse 4 , 37077 Göttingen , Germany.
² School of Chemical Engineering and Environment , Beijing Institute of Technology , 100081 Beijing , China.
³ State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering , Xiamen University , 361005 Xiamen , China.

PMID: 31390189
DOI: 10.1021/acs.inorgchem.9b02001

Abstract

Carbenes are known as donor molecules to form with chloroalane adducts, which enhances their aerobic and thermal stabilities. In contrast, the insertion products (cAACH)AlCl₂(cAAC) (1) and (cAACH)AlHCl(THF) (2; THF = tetrahydrofuran) have been formed in the reaction of a cyclic alkyl(amino)carbene (cAAC:) with HAlCl_2, and H₂AlCl, respectively. PhC(NtBu)₂Li as the precursor for the reaction with HAlCl₂ in a molar ratio of 2:1 can easily form compound [PhC(NtBu)₂]₂AlH (3) with five-coordinate aluminum. The new products have been studied by spectroscopic methods and single-crystal X-ray diffraction.