A B C
Z. Naturforsch. 2014, 69b, 799 – 803
doi:10.5560/ZNB.2014-3332
Synthesis and Structure of an Aluminum Bis(3-chloropentanedionate) Isopropoxide: [Al(μ-OiPr)(3-Clacac)2]2
Kiran Gupta1, Peter Mayer2 and Ashutosh Pandey1
1 Department of Chemistry, Motilal Nehru National Institute of Technology, Allahabad, 211004, India
2 Department of Chemistry and Biochemistry, University of Munich, Butenandtstr. 5–13, 81377 Munich, Germany
Reprint requests to Dr. Ashutosh Pandey. E-mail: apandey70@yahoo.com
Received December 24, 2013; in revised form April 18, 2014 / published online July 8, 2014
[Al(OiPr)3]4 was reacted at ambient temperature with 3-chloropentanedione (3-ClacacH) in 1:1 molar ratio in toluene, to obtain the mono-substituted product. However, the bis-substituted dinuclear tetrakis(3-chloropentanedionato)-di-μ-isopropoxy-dialuminum(III) [Al(μ-OiPr)(3-Clacac)2]2 (1A) was isolated in 46 % yield upon aging of the reaction mixture at −10 °C. The supernatant upon aging yielded a crop of tris-3-chloroacetylacetonate Al(3-Clacac)3 ·H2O (1) in 13 % yield. Complexes 1A (monoclinic, space group P21/c with Z = 2) and 1 (cubic, space group P43̅n with Z = 8) were characterized by elemental analyses, NMR and IR spectroscopy and single-crystal X-ray crystallography.
Key words: Aluminum, 3-Chloropentanedione, Isopropoxy, Single-crystal X-Ray Crystallography
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