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Molecules 2006, 11(12), 940-952; doi:10.3390/molecules11120940
Article

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}]

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Received: 17 November 2006; in revised form: 4 December 2006 / Accepted: 5 December 2006 / Published: 6 December 2006
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Abstract: 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.
Keywords: Tetracarbonyl metal complexes; pyrazolylpyridine ligand; microwave synthesis; X-ray structure Tetracarbonyl metal complexes; pyrazolylpyridine ligand; microwave synthesis; X-ray structure
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Coelho, A.C.; Almeida Paz, F.A.; Klinowski, J.; Pillinger, M.; Gonçalves, I.S. 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 2006, 11, 940-952.

AMA Style

Coelho AC, Almeida Paz FA, Klinowski J, Pillinger M, Gonçalves IS. 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. 2006; 11(12):940-952.

Chicago/Turabian Style

Coelho, Ana C.; Almeida Paz, Filipe A.; Klinowski, Jacek; Pillinger, Martyn; Gonçalves, Isabel S. 2006. "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 11, no. 12: 940-952.


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