Dimolybdenum

Fig. 3. Representive stmctures for compounds of molybdenum(V) (a) dimolybdenum dodecachloride [26814-39-17, M02CI2Q, the dimer of molybdenum pentachloride (b)pentakis(thiocyanato)oxomolybdenum(V), MoO(NCS)g (c) Mo20 (NCS)g (d) Mo2(S2)g (e) Mo2Sg (f) Mo2S (S2CNR2)2 (g)...

Molybdenum(III) complexes include the molybdenum trihaUdes. Molybdenum trichoride [13478-18-7], trifluoride [20193-58-2], tribromide [13446-57-6], and ttiiodide [14055-75-5] are all known. The oxide dimolybdenum trioxide [1313-29-7], M02O2, and the seldom-studied sulfide analogue [12033-33-9], M02S2, are formally trivalent. 

MO2B5 dimolybdenum pentaboride [12007-97-5] ">2100 YB32 yttrium boride (1 12) [12046-90-1] 2200, d... 

Prospects for dinuclear transition metal chemistry illustrated by recent advances in the chemistry of dimolybdenum and ditungsten. M. H. Chisholm, Transition Met. Chem. (Weinheim, Ger.), 1978, 3, 321-333 (91). 

A unique pair of stereoisomeric dimolybdenum amidinate complexes has been prepared and structurally characterized. The reaction of Li[PhC(NSiMe3)2] with dimolybdenum tetraacetate afforded trans- and ds-Mo2(02CMe)2[PhC (NSiMe3)2]2- While the acetates coordinate to the M02 core via a bridging mode in both compounds, the benzamidinates are bridging in the trans complex and... 

Gupta, S.K., Atkins, R.M. and Grngerich, K.A. (1978) Mass spectrometric observation and bond dissociation energy of dimolybdenum, Mo2(g). Inorganic Chemistry, 17, 3211-3213. 

Figure 98 Quadruply bonded dinuclear dimolybdenum(II) complexes (a) Mo2(pyphos)4, (b) Mo2Pd2Cl2...

Photoionization Spectroscopy of Dichromium and Dimolybdenum Ionization Potentials and Bond Energies. 

Furthermore, chemical oxidation of [Mo(CO)6] with organic molecules containing acidic hydrogen gives rise to molybdenum species in the +2, -i-3 and +A oxidation states. Higher oxidation states (r-5 and -i-6) have been observed when halogens directly oxidize [Mo(CO)6], A Mo tetranuclear complex has been obtained when hydrochloric acid reacts with the tri-p-hydroxy-dimolybdenum complex, as shown in Equation 9.2 ... 

Adams, R.D., Brice, M. and Cotton, F.A. (1973) Intramolecular ligand scrambling via bridged transition states or intermediates in di(pentahapto-cyclopentadienyl) (methyl isocyanide) (pentacarbonyl)dimolybdenum. J. Am. Chem. Soc., 95, 6594-502. 

Although the redox reactions in Sch. 12 have not been achieved electrochemically, they illustrate another type of redox-induced structural change in a dimolybdenum compound with a sulfur-rich coordination sphere. In this case, Mo2(/r-S)2 ring opening in 18 (cleavage of Mo—Mo and Mo—S bonds) is associated with the exposure of vacant coordination sites, and the uptake of two carbonyl ligands in 17 [7, 53]. 

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