Acetates and acetato complexes. IV. The crystal and molecular structure of tin tetraacetate

Alcock, N. W.; Tracy, V. L.

doi:10.1107/s0567740879002582

Cited by 43 publications

(17 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By contrast, the acetate ion in a crystal of Sn(O 2 CMe) 4 is a representative example of the bidentate form. 21 The two CO bond lengths are 1.264 Å on the average, and the OCO angle is 118.3°. This acetate ion is similar to that in 7.…”

Section: Computational Proceduresmentioning

confidence: 99%

Correlation between the Vibrational Frequencies of the Carboxylate Group and the Types of Its Coordination to a Metal Ion: An ab Initio Molecular Orbital Study

1996

View full text Add to dashboard Cite

The structures and vibrational frequencies of the acetate ion interacting with a metal ion (Na + , Mg 2+ , and Ca 2+ ) in the unidentate, bidentate, bridging, and pseudobridging forms are studied by ab initio molecular orbital calculations. Effects of a water molecule coordinating to either the acetate ion or the metal ion are also examined. The calculations are carried out by using the self-consistent reaction field method at the Hartree-Fock level with the 6-31+G** basis set. For the species interacting with a divalent metal cation, the lengths of the two CO bonds of the acetate ion are nearly equal in the bidentate form but are significantly different in the unidentate form. The frequency of the COO -antisymmetric stretch of the unidentate species is higher than that of the ionic species, which is in turn higher than that of the bidentate species. The reverse is the case for the COO -symmetric stretch. As a result, the frequency separations (∆ν a-s ) between the COO -antisymmetric and symmetric stretches for the unidentate, bidentate, and ionic species are in the following order: ∆ν a-s (unidentate) > ∆ν a-s (ionic) > ∆ν a-s (bidentate). It is demonstrated that such a correlation between the vibrational frequencies of the COO -group and the types of its coordination to a divalent metal cation is related to changes in the CO bond lengths and the OCO angle. The results of the present study clarify the physical basis of the empirical structure-frequency correlation, which has been used in the analysis of the infrared spectra of Ca 2+ -binding proteins.

show abstract

Section: Computational Proceduresmentioning

confidence: 99%

Correlation between the Vibrational Frequencies of the Carboxylate Group and the Types of Its Coordination to a Metal Ion: An ab Initio Molecular Orbital Study

1996

View full text Add to dashboard Cite

show abstract

“…The trigonal dodecahedron has 18 edges and with 4 symmetry only five are independent. Of these, one, within the chelate ring, is short [2.19 (1) A search of the Cambridge Structural Database (1994) produced no lead(IV) tetracarboxylates, but the structure of tetrakis(acetato)tin(IV) (Alcock & Tracy, 1979) has been shown to have a very similar coordination polyhedron to that of tetrakis(o-benzoylbenzoato)lead(IV), with four-membered chelate rings having unequal Sn--O bond lengths. The trigonal dodecahedral theme extends to tris(acetato)(2-methylphenyl)lead(IV) and tris-(acetato)(2-chlorophenyl)lead(IV) (Huber, Preut, Scholz & Schurmann, 1992) in which the phenyl group replaces one of the acetate ligands.…”

Section: Commentmentioning

confidence: 99%

Tetrakis(o-benzoylbenzoato-O,O')lead(IV) Dichloromethane Solvate

Prout¹,

Vaughan-Lee²,

Moloney³

et al. 1996

Acta Crystallogr C

View full text Add to dashboard Cite

In the title complex, [Pb(CI4H903)4].CH2CI..2, the Pb atom is located at a point of symmetry (4) and is coordinated by eight carboxylate O atoms of four benzoylbenzoate anions at the corners of a somewhat distorted trigonal dodecahedron [Pb---O 2.317 (9) and 2.235 (9)A]. The dichloromethane solvent molecule is disordered in holes in the crystal structure, on the fourfold inversion axis between the Pb atoms.

show abstract

“…The simplest example is tin(IV) acetate, in which each acetate ligand chelates to a central tin(IV) ion. [10] Other metals that have such a bonding pattern include zirconium(IV), cadmium(II), and indium(III). [11,12] However, to serve as a general synthetic method to create homochiral 3D zeolite-like tetrahedral framework materials, the selection of metals and ligands has to be coupled with the templated synthesis approach, similar to the templated synthesis of zeolites.…”

mentioning

confidence: 99%

Multiple Functions of Ionic Liquids in the Synthesis of Three‐Dimensional Low‐Connectivity Homochiral and Achiral Frameworks

2008

View full text Add to dashboard Cite

Low connectivity of framework building blocks (that is, with 4 or 3 connections) is closely associated with open architecture and porosity in three-dimensional (3D) framework materials. The importance of materials with low connectivity is shown by the large-scale industrial applications of zeolites (4-connected) in catalysis, gas separation, etc.[1] The synthetic development of low-connectivity frameworks with new composition and topology continues to attract much attention, as applications of such materials depend on the unique composition or framework topology of each individual material. [2][3][4][5][6] Despite tremendous success in the synthesis of lowconnectivity framework materials in the past several decades, 3D chiral low-connectivity framework materials, and particularly those with bulk homochirality, are still rare. Traditional zeolites are typically achiral. Even those with chiral topology (e.g., zeolite b) have not been prepared in the enantiopure form. Recent progress with metal-organic framework materials have opened up new routes toward the synthesis of homochiral solids. [7][8][9] However, a generalized synthetic approach is lacking for the preparation of 3D homochiral low-connectivity framework materials that are stoichiometrically and topologically similar to zeolites.We seek to develop a generalized method to synthesize homochiral zeolite-like low-connectivity framework materials. Although the method is equally successful with the achiral system and in molecular solvents, herein we focus on the applicability of this method for the synthesis of homochiral materials and the multiple roles of ionic liquids.

show abstract

Acetates and acetato complexes. IV. The crystal and molecular structure of tin tetraacetate

Cited by 43 publications

References 0 publications

Correlation between the Vibrational Frequencies of the Carboxylate Group and the Types of Its Coordination to a Metal Ion: An ab Initio Molecular Orbital Study

Correlation between the Vibrational Frequencies of the Carboxylate Group and the Types of Its Coordination to a Metal Ion: An ab Initio Molecular Orbital Study

Tetrakis(o-benzoylbenzoato-O,O')lead(IV) Dichloromethane Solvate

Multiple Functions of Ionic Liquids in the Synthesis of Three‐Dimensional Low‐Connectivity Homochiral and Achiral Frameworks

Contact Info

Product

Resources

About