The Molecular Structure of Molybdenum(II) Acetate

Lawton, D. M.; Mason, R.

doi:10.1021/ja01082a046

Cited by 147 publications

(54 citation statements)

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“…(4) The structure is simple: P1, Z = 1, hence there are only a small number of parameters to be determined. The structure of this compound, previously reported in part by Lawton & Mason (1965), was redetermined by using more extensive data collected by diffractometry (Cotton, Mester & Webb, 1974).…”

Section: Introductionmentioning

confidence: 99%

Electron-density distribution in crystals of tetra-μ-acetato-dimolybdenum(Mo–Mo)

Hino¹,

Saito²,

Bénard³

1981

Acta Crystallogr Sect B

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The electron-density distribution in crystals of Moz(CH3COz) 4 has been determined by single-crystal X-ray diffractometry at 293 K [crystal data: Moz(CzH3Oz)4, space group PI, a = 8.4084 (6) In general terms, a section of the deformation-density map perpendicular to and through the midpoint of the Mo--Mo bond shows diffuse residual density surrounding the bond in the form of a torus, the maximum being 0.2 (1)e/~, -3. On both sides of the Mo-Mo bond, there are disc-shaped peaks of 0.3 (1) e/~-3 each 0.42 A, from the Mo atom. The valenceelectron populations of the atoms were refined and the net charges of Mo, O and C atoms were estimated to be +1.16 (8), -0-29 (4) and +0.00 (4) respectively. These and other features of the deformation density around the Mo atoms can be reasonably accounted for in terms of a classical picture of a quadruple Mo-Mo bond and also agree with the result of ab initio CI (configuration interaction) calculations for analogous Moz(HCOz)4.

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Section: Introductionmentioning

confidence: 99%

Electron-density distribution in crystals of tetra-μ-acetato-dimolybdenum(Mo–Mo)

Hino¹,

Saito²,

Bénard³

1981

Acta Crystallogr Sect B

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“…Molecular structure of molybdenum acetate with the 'paddle-wheel' motif (Mo: blue, O: red, C: grey) 11. The axial coordination sites are usually free or occupied by solvent ligands (THF, water, etc.…”

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confidence: 99%

From molecules to materials: Molecular paddle-wheel synthons of macromolecules, cage compounds and metal–organic frameworks

et al. 2011

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Metal-organic frameworks (MOF) are becoming a more and more important class of functional materials. Yet, very often, the synthesis of MOFs is not easy to control and requires a profound knowledge and experience in solid state chemistry. One of the most frequently used metal connectors is the so-called 'paddle-wheel' (PW) unit, which is a well-known molecular compound type in inorganic coordination chemistry. Depending on the ligands, the geometry of PWs strictly directs the assembly of ordered networks. This review focuses on the question, to what extent ordered network structures can be accessed by typical molecular syntheses in solution, starting from molecular PW complexes to ordered macromolecules, finite cage compounds and finally, three-dimensional superstructures.

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“…4 A 3 ' The gross rotations of the phenyl rings about their respective N-C(pheny1) bonds is consistent with the single bond character suggested by the average distance of 1. 43(1) A for these bonds, the quoted value for N-C(aromatic) single bond length being also 1.43 A.32333 In all respects the ligand dimensions are remarkably consistent for all three structures. The nitrogen-nitrogen distance shows that the two N-N bonds of each ligand group are equivalent [average 1.31(1) A] ; this suggests delocalization of the n electrons over the triazenide moiety.…”

Section: Resultsmentioning

confidence: 87%

Binuclear metal(II) complexes of 1,3-diphenyltriazene : The crystal and molecular structures of the nickel(II), palladium(II) and copper(II) derivatives

Corbett¹,

Hoskins²,

McLeod³

et al. 1975

Aust. J. Chem.

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The crystal and molecular structures have been determined, by single-crystal X-ray methods, for each of the isomorphous set of divalent binuclear metal derivatives of 1,3-diphenyltriazene, abbreviated as dptH, [M(dpt),], where M = Ni, Pd, and Cu. The crystals are composed of discrete molecular units, of composition Mz(dpt)4, which have a syn-syn structure analogous to that of copper(11) acetate monohydrate with pairs of closely separated metal atoms held together by the terminal nitrogen atoms of four ligand groups in such a way that the environment of each metal atom is almost square-planar. The interatomic distances between the pairs of metal atoms, 2.395(3), 2563(1), and 2.441(2) A for the Ni, Pd, and Cu compounds, are strongly suggestive of metal-metal bonding. The two N4-planes are almost parallel but the two sets of coordinating nitrogen atoms are twisted markedly from the eclipsed configuration, the average angle of rotation being about 15". Crystals of each complex are triclinic with space group P 'f. The unit cell parameters in the order of a, b, c, a, p, and y are 10.d p t )~. The structure of the nickel complex was solved by the Patterson-Fourier method and the atomic parameters found for this structure were used as the basis of the structure determinations of the isomorphous copper and palladium compounds. All three structures were refined by a block-diagonal least-squares method using 3300 (photographic data) 4065 (counter) and 2753 (counter) independent non-zero terms for the nickel@), palladium(~~) and copper(11) compounds respectively, converging with R values 0.13 (isotropic), 0.056 (anisotropic) and 0.069 (isotropic) respectively.

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The Molecular Structure of Molybdenum(II) Acetate

Cited by 147 publications

References 0 publications

Electron-density distribution in crystals of tetra-μ-acetato-dimolybdenum(Mo–Mo)

Electron-density distribution in crystals of tetra-μ-acetato-dimolybdenum(Mo–Mo)

From molecules to materials: Molecular paddle-wheel synthons of macromolecules, cage compounds and metal–organic frameworks

Binuclear metal(II) complexes of 1,3-diphenyltriazene : The crystal and molecular structures of the nickel(II), palladium(II) and copper(II) derivatives

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