Stability Relationships Among Analogous Molecular Addition Compounds Of Group III Elements

Stone, F. Gordon A.

doi:10.1021/cr50019a003

Cited by 98 publications

(15 citation statements)

References 49 publications

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“…Bands at 455 and 479 cm À1 in Ph 3 PO and Ph 3 AsO, respectively, ascribed to (P-C) and (As-C) move to higher spectral regions at 465 and 490 cm À1 in agreement with earlier reports [33,35]. Complexes of tertiary phosphines with a number of acceptors have been reported to be more stable than those of analogous arsines [36,37].…”

Section: Reactions Of [Nbcl 2 (Oc 6 H 4 C(ch 3 ) 3 -2) 3 ] With Ph 3 supporting

confidence: 88%

Synthesis, characterization, and acceptor behavior of dichlorotris(2-t-butylphenoxo)niobium(V)

Sharma

Bhatt

et al. 2010

Journal of Coordination Chemistry

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The reaction of niobium pentachloride with three equivalents of 2-t-butylphenol in carbon tetrachloride afforded [NbCl 2 (OC 6 H 4 C(CH 3 ) 3 -2) 3 ]. The identity of the complex has been established by elemental analyses, molar conductance, molecular weight determination, IR, 1 H, and 13 C-NMR and UV-Vis spectral studies. Based upon these studies, a square-pyramidal geometry around niobium has been proposed. Thermal behavior of the complex has been studied by TGA and DTA. Acceptor behavior of [NbCl 2 (OC 6 H 4 C(CH 3 ) 3 -2) 3 ] toward Ph 3 P, Ph 3 As, Ph 3 PO, Ph 3 AsO, and an uncommon ligand arsenictrithiophenoxide As(SPh) 3 allows the isolation of 1 : 1 addition compounds as shown by physicochemical, IR, and 1 H-NMR spectral studies. The formation of [NbCl 2 (OC 6 H 4 C(CH 3 ) 3 -2) 3 ] Á As(SPh) 3 appears to be the first adduct of its class and suggests the suitability of As(SPh) 3 as a ligand.

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Section: Reactions Of [Nbcl 2 (Oc 6 H 4 C(ch 3 ) 3 -2) 3 ] With Ph 3 supporting

confidence: 88%

Synthesis, characterization, and acceptor behavior of dichlorotris(2-t-butylphenoxo)niobium(V)

Sharma

Bhatt

et al. 2010

Journal of Coordination Chemistry

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“…Until recently, only a few molecular addition compou~lds of aluminum with ligands of group V had been reported (1). In some of the earliest work, Brown and Davidson ( 2 ) described methyla1uniinun1-methylanline complexes.…”

Section: Introductionmentioning

confidence: 99%

The Chemistry of Aluminum-Nitrogen Compounds: I. Reactions of Trimethylaluminum and Trimethylaluminum Trimethylamine With Several Methylhydrazines

Fetter¹,

Bartocha²

1961

Can. J. Chem.

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The reactions of trimethylaluminum and trimethylaluminum trimethylamine with various methylhydrazines have produced a number of complexes and polymers: with methylhydrazine, both Me3Al and Me3Al:NMe3 produce the polymer [—MeAlNHNMe—]n with 1,2-dimethylhydrazine, both produce the polymer [—Al(MeNNMe)1.5—]n; with 1,1-dimethylhydrazine, Me3Al produces [Me2Al—NHNMe2]2 and Me3Al:NMe3 produces the unusual complex Me2Al(NHNMe2) (NH2NMe2); with trimethylhydrazine, Me3Al produces [Me2Al—NMeNMe2]2 and Me3Al:NMe3 produces an isomer with the same formula but an as-yet-uncharacterized structure. In addition, the intermediate Me3Al:NHMeNMe2 has been isolated from the reaction of either Me3Al or Me3Al:NMe3 with trimethylhydrazine. With tetramethylhydrazine, Me3Al produces Me3Al:NMe2NMe2. The formation of the complexes with covalent aluminum–nitrogen bonds is specific and methane is the only gas eliminated during these reactions.

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“…In fact, semi-quantitative studies in the gas phase [3] show that the BF 3 basicity of methyl derivatives of the elements of groups 15 and 16 decreases in the order N > P > As > Sb (group 15) This is confirmed by the quantitative BF 3 affinity scale, which shows that trimethylamine and tetrahydrofuran have a higher BF 3 affinity than trimethylphosphine and tetrahydrothiophene, respectively. In fact, semi-quantitative studies in the gas phase [3] show that the BF 3 basicity of methyl derivatives of the elements of groups 15 and 16 decreases in the order N > P > As > Sb (group 15) This is confirmed by the quantitative BF 3 affinity scale, which shows that trimethylamine and tetrahydrofuran have a higher BF 3 affinity than trimethylphosphine and tetrahydrothiophene, respectively.…”

Section: Hardness Of Bfmentioning

confidence: 84%

“…In fact, semi-quantitative studies in the gas phase [3] show that the BF 3 basicity of methyl derivatives of the elements of groups 15 and 16 decreases in the order N > P > As > Sb (group 15) This is confirmed by the quantitative BF 3 affinity scale, which shows that trimethylamine and tetrahydrofuran have a higher BF 3 affinity than trimethylphosphine and tetrahydrothiophene, respectively. The hardness of the interaction of BF 3 with NH 3 , NMe 3 and CO has been studied [70] through the local Hard-Soft Acid-Base principle. Indeed, the decrease in basicity (affinity) in descending groups 15 and 16 of the periodic table is characteristic of hard basicity scales.…”

Section: Hardness Of Bfmentioning

confidence: 84%

The BF₃Affinity Scale

Laurence

Gal

2009

Lewis Basicity and Affinity Scales

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Stability Relationships Among Analogous Molecular Addition Compounds Of Group III Elements

Cited by 98 publications

References 49 publications

Synthesis, characterization, and acceptor behavior of dichlorotris(2-t-butylphenoxo)niobium(V)

Synthesis, characterization, and acceptor behavior of dichlorotris(2-t-butylphenoxo)niobium(V)

The Chemistry of Aluminum-Nitrogen Compounds: I. Reactions of Trimethylaluminum and Trimethylaluminum Trimethylamine With Several Methylhydrazines

The BF₃Affinity Scale

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Stability Relationships Among Analogous Molecular Addition Compounds Of Group III Elements

Cited by 98 publications

References 49 publications

Synthesis, characterization, and acceptor behavior of dichlorotris(2-t-butylphenoxo)niobium(V)

Synthesis, characterization, and acceptor behavior of dichlorotris(2-t-butylphenoxo)niobium(V)

The Chemistry of Aluminum-Nitrogen Compounds: I. Reactions of Trimethylaluminum and Trimethylaluminum Trimethylamine With Several Methylhydrazines

The BF3Affinity Scale

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The BF₃Affinity Scale