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Molybdenum hexacarbonyl is a popular reagent in academic research. [6]One or more CO ligands can be displaced by other ligands. [7] Mo(CO) 6, [Mo(CO) 3 (MeCN) 3], and related derivatives are employed as catalysts in organic synthesis for example, alkyne metathesis and the Pauson–Khand reaction.
Molybdenum hexacarbonyl is the precursor to many substituted derivatives. It reacts with organolithium reagents to give anionic acyls which can be O-alkylated to give Fischer carbenes. Structure of (mesitylene)molybdenum tricarbonyl. Mo(CO) 6 reacts with arenes to give piano-stool complexes such as (mesitylene)molybdenum tricarbonyl.
Not until 1927 did A. Job and A. Cassal succeed in the preparation of chromium hexacarbonyl and tungsten hexacarbonyl, the first synthesis of other homoleptic metal carbonyls. [citation needed] Walter Hieber played in the years following 1928 a decisive role in the development of metal carbonyl chemistry.
(Mesitylene)molybdenum tricarbonyl arises from the reaction of molybdenum hexacarbonyl with hot mesitylene: [1]. Mo(CO) 6 + (CH 3) 3 C 6 H 3 → Mo(CO) 3 [(CH 3) 3 C 6 H 3] + 3 CO It can also be synthesized, with good yields by displacement of pyridine ligands of the trispyridine complex Mo(CO) 3 (pyridine) 3 in the presence of Lewis acids.
Heteroleptic complexes of molybdenum and tungsten can by synthesized from their respective hexacarbonyl complexes. [4] M(CO) 6 + 4 MeCN + 2 NOBF 4 → [M(NO) 2 (MeCN) 4](BF 4) 2 Portion of the structure of the tetrachlorozincate (ZnCl 4 2−) salt of [Ni(MeCN) 6] 2+ [5] For the synthesis of some acetonitrile complexes, the nitrile serves as a ...
The molecule exists in two rotamers, gauche and anti. [1] The six CO ligands are terminal and the Mo-Mo bond distance is 3.2325 Å. [2] The compound is prepared by treatment of molybdenum hexacarbonyl with sodium cyclopentadienide followed by oxidation of the resulting NaMo(CO) 3 (C 5 H 5). [3]
The compound is prepared by thermal reaction of the triene with molybdenum hexacarbonyl: [2] C 7 H 8 + Mo(CO) 6 → (C 7 H 8)Mo(CO) 3 + 3 CO. The compound is a piano stool complex, consisting of Mo(CO) 3 bound to six carbon centers of the triene. The methylene group projects from the plane of the six coordinated carbon atoms. [3]
Nitrosyl chloride and molybdenum hexacarbonyl react to give [Mo(NO) 2 Cl 2] n. [13] Diazald is also used as an NO source. [14] From hydroxylamine.