Complexes of dimolybdenum(II) with DL-amino acids. 2. Crystal structure of compounds containing DL-Valine and DL-Leucine

Francoise Apfelbaum, Avi Bino*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

[Mo2(D-Val)2(L-Val)2](ZnCl4)2·4H2O(1) and [Mo2(D-Leu)2(LLeu)2](PTS)2Cl2·2H2O(2)(Val= Valine; Leu=Leucine; PTS=p-toluensulfonate) were prepared by reacting Mo24+ with the racemic amino acid in water followed by the addition of the appropriate counter ion. [Mo2(D-Val)(LVal)(NCS)4]·1 1 2 H2O(3) was prepared by adding NCS- ions to a solution of Mo24+ and DL-Valine. The structures of 1, 2 and 3 were determined by X-ray crystallography. Compound 1 is triclinic, space group P1 with a = 12.162(1), b=12.780(1), c=7.429(1) Å, α=106.52(2), β=92.61(3), γ=72.89(3)o, V= 1057(I) Å3 and Z=1. Compound 02 is triclinic, space group P1 with a=9.326(I), b=15.546(2), c=9.092(1) Å, α= 92.41(3), β= 100.27(2), γ=76.87(2)o, V= 1263(1) Å3 and Z=1. Compound 3 is triclinic, space group P1 with a=12.221(1), b=13.366(2), c=9.745(1) Å, α=104.39(2), β=103.50(3), γ=71.05(3)o, V= 1438(1) Å3 and Z=2. In 1 and 2 the dimeric unit resides on a crystallographic center of symmetry and the four ligands are coordinated to the Mo24+ unit in the cyclic order of DDLL. In 3, the molecule has a cisoid arrangement of the amino acid ligands and the four NCS- ligands.

Original languageAmerican English
Pages (from-to)191-195
Number of pages5
JournalInorganica Chimica Acta
Volume155
Issue number2
DOIs
StatePublished - 16 Jan 1989

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