ISSN:
1572-8862
Keywords:
Molybdenum
;
trinuclear
;
oxo ligand
;
briding halide
;
bridging acetate
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract The reaction of MoCl3(H2O)3 with a mixture of acetic acid and acetic anhydride in the presence of [N(C4H9)4][BF4] followed by crystallization from acetone/hexane gives a 77% yield of dark purple [NBu4][Mo3OCl6(OAc)3]·Me2CO (1). A similar reaction employing MoBr3(H2O)3 gives purple [NBu4][Mo3OBr6(OAc)3]·Me2CO (2) in 50% yield. Also produced in this reaction in low (10–20%) yields are [NBu4]2[Mo4OBr12] · 0.5Me2CO and [NBu4]2[Mo3OBr6(OAc)3] · Me2CO which will be discussed elsewhere Compounds (1) and (2) are isomorphous, space groupP21/n,Z=4 with the following unit cell dimensions, where the values for (1) and (2) are given in that order for each one:a=13.406(4), 13.726(5) Å;b=15.701(4), 15.839(5) Å;c=19.250(5), 19.831(6) Å; β=101.61(2), 102.92(3)°. Both (1) and (2) are eight-electron species in which the mean Mo-Mo distances are 2.578(1) Å and 2.597(1) Å, respectively.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00702877
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