A possible carbon dioxide complex of molybdenum and its rearrangement product di-µ-carbonato-bis{carbonyltris(dimethylphenylphosphine)molybdenum}: X-ray crystal structure

Unexpected reactions of (Me2C)(Me2Si)[(η5-C5H3)Mo(CO)3]2 with diazoalkane and carbon disulfide: Activation and cleavage of the NN bond and disproportionation of carbon disulfide

“…In addition, Complex 4 could also be obtained in 61% yield from 1 and S 2 CPPr i 3 in refluxing toluene with addition a large excess of CS 2 (Scheme 4). This reaction gives rise to the first example for disproportionation of CS 2 , although disproportionation of CO 2 with the aid of metal complex has been known for some time [13]. In the 1 H NMR spectrum, 4 shows six resonances for the Cp protons, indicating the unsymmetrical structure, while 5 shows three peaks for the equivalent Cp rings as expected for a symmetrical structure.…”

About the Reaction of C(PPh3)2 with [M(CO)6] (M = Cr, Mo): Unusual Formation of μ‐Carbonato Complexes of Mo under Participation of THF

“…Due to the coordination mode the Mo ··· Mo separation is with 5.619(1) Å larger than that of 7 . Relative to Chatts Mo II complex the everage chelating Mo–O bond length is longer whereas that to the unique Mo atom is shorter . A similar μ.η 1 :η 2 coordination of CO 3 2– is found in two zinc complexes .…”

“…Relative to Chatts Mo II complex the everage chelating Mo-O bond length is longer whereas that to the unique Mo atom is shorter. [26] A similar μ.η 1 :η 2 coordination of CO 3 2-is found in two zinc complexes. [31] and various f-block elements.…”

“…About 45 years ago Chatt has reported on the dimeric Mo II complex [{Mo(CO 3 )(CO)(PMe 2 Ph) 3 } 2 ] with an unusual bridging mode of binding for carbonate ions, each being bidentate to one molybdenum atom and monodentate to the other. As origin of the carbonate ligand starting from a CO 2 complex presumably serves THF; the authors, however, proposed a disproportion of CO 2 according to Equation : …”

A personal account of some dinitrogen and organometallic chemistry research at the University of Sussex

“…We reported new carbonylrhenium complexes [32], the synthesis of cyclopentadienyl carbonyls of niobium and tantalum [33], low-pressure syntheses of niobium carbonyls [34], and new cyclopentadienyltitanium compounds [35]. Our researches also threw up novel compounds, generally of molybdenum and tungsten, such as carbon dioxide complexes [36] and diazoalkane complexes [37], formato complexes [38], an hydroxycarbene complex [39], and bis(organodiazenido) compounds [40]. However, our major interest was always the study of the reactivity of coordinated dinitrogen and the organometal studies listed here tended to that end.…”