Alkoxide ligand controlled self-assembling of (imido)vanadium(V) compounds having a tetrahedral VO
3N geometry.
J Inorg Biochem 2019;
203:110880. [PMID:
31726333 DOI:
10.1016/j.jinorgbio.2019.110880]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 10/01/2019] [Accepted: 10/03/2019] [Indexed: 11/21/2022]
Abstract
The reaction of (1S,2S)-(-)-1,2-diphenylethylenediamine with VO(OiPr)3 in the presence of NaH was found to afford the binuclear (imido)vanadium(V) triisopropoxide, [(OiPr)3V(N-meso-1,2-DPE-N)V(OiPr)3] (DPE = diphenylethylene), (1aRS/SS). Using (1R,2R)-(+)-1,2-diphenylethylenediamine as a starting material, one-step reaction also proceeded to form the binuclear (imido)vanadium(V) triisopropoxide, [(OiPr)3V(N-meso-1,2-DPE-N)V(OiPr)3], (1aRS/RR). The single-crystal X-ray structure determination of 1aRS/SS revealed the hydrogen-bonded self-assembled structure utilizing the advantage of anti-conformation through the intermolecular hydrogen bonds of C-H···O pattern between phenyl and isopropoxide moieties, wherein each vanadium atom is coordinated in a nearly tetrahedral VO3N geometry (τ4 = 0.017 and 0.057). On the contrary, a discrete (imido)vanadium(V) tris(triphenylsiloxide) unit, which possesses a nearly tetrahedral VO3N arrangement around the vanadium metal center (τ4 = 0.060), was observed in the crystal structure of the (4-methoxyphenylimido)vanadium(V) tris(triphenylsiloxide), [(p-MeOC6H4N)V(OSiPh3)3], (1b) with bulky triphenylsiloxide ligands.
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