Microwave Assisted Synthesis of Molybdenum and Tungsten Tetracarbonyl Complexes with a Pyrazolylpyridine Ligand. Crystal structure of cis-[Mo(CO)4{ethyl[3-(2-pyridyl)-1-pyrazolyl]acetate}]

Molecules

Ana C. Coelho¹  Filipe A. Almeida Paz¹  Jacek Klinowski¹  Martyn Pillinger¹ 

[1] ¹Department of Chemistry, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal ²Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK

关键词: Tetracarbonyl metal complexes;    pyrazolylpyridine ligand;    microwave synthesis;    X-ray structure;   

DOI  :  10.3390/molecules11120940

来源: mdpi

【 摘 要 】

We report the one-step syntheses in good yields of the complexes cis-[M(CO)₄(pzpy)] {M = Mo, W; pzpy = ethyl[3-(2-pyridyl)-1-pyrazolyl]acetate} directlyfrom the corresponding M(CO)₆ starting materials by using microwave-assisted heatingand reaction times of either 30 s (M = Mo) or 15 min (M = W). The structure of themolybdenum tetracarbonyl complex was determined by single crystal X-ray diffraction.The compound is monomeric and the molybdenum atom has a highly distorted octahedralgeometry. The close packing of the individual cis-[Mo(CO)4(pzpy)] species is essentiallydriven by the need to fill the space effectively, closely mediated by weak C–H···O andπ···π interactions.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.