Donor−Acceptor Chemistry at Heavy Chalcogen Centers

Dutton, Jason L.; Ragogna, Paul J.

doi:10.1021/ic801883e

Cited by 58 publications

(40 citation statements)

References 56 publications

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“…The benzimidazole core of 10a is planar and the sulfur atom is also in the same plane. The CeS bond distance (1.674(2) A) is shorter than the single bond (1.789(1) A) and longer than the double bond distances (1.635 A) (14) and N2eC1eN1 106.32 (16) ) are comparable with compounds 10b, 10d and 10f, while in iso-propyl substituted compounds 10e and 10g, the angle N1BeC1eN1A (107.30 (17) ) is slightly higher than the other compounds.…”

Section: 2mentioning

confidence: 77%

“…Also the bond angles C14eSe1eBr2 (89.18 (5) ) and C14eSe1eBr3 (86.36 (5) ) are not equal. Ragogna and co-workers [14] have reported a related molecular structure with equal SeeBr bond lengths (2.5870(10) A) and bond angles (87.87 (3) ). The Se1eC14 bond length (1.8967(15) A) and Br2eSe1eBr3 (175.527 (8) ) also resemble with the values reported in literature [14].…”

Section: Molecular and Crystal Structure Of Compounds 16a16c And 16ementioning

confidence: 96%

“…Ragogna and co-workers [14] have reported a related molecular structure with equal SeeBr bond lengths (2.5870(10) A) and bond angles (87.87 (3) ). The Se1eC14 bond length (1.8967(15) A) and Br2eSe1eBr3 (175.527 (8) ) also resemble with the values reported in literature [14]. In compound 16c, bond distances I1eSe (2.7040(3) A) and I2eSe (2.8982(3) A) are significantly unequal with a difference of 0.2 A and the bond angle C1eSeeI1 (91.91 (7) ) is much larger than C1eSeeI2 (84.22 (7) ).…”

Section: Molecular and Crystal Structure Of Compounds 16a16c And 16ementioning

confidence: 96%

“…Arduengo et al reported synthesis of the thione and tellurium analogs (1) [11,12]. The chalcogen(IV) compounds (2) have been synthesized by treating chalcogenones with halogens/halogenating agents [13,14]. Devillanova and co-workers have synthesized stable bis(selenones) and their halogen derivatives [15].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Facile synthesis of benzimidazolin-2-chalcogenones: Nature of the carbon–chalcogen bond

Manjare

Sharma

Singh

et al. 2012

Journal of Organometallic Chemistry

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Section: 2mentioning

confidence: 77%

Section: Molecular and Crystal Structure Of Compounds 16a16c And 16ementioning

confidence: 96%

Section: Molecular and Crystal Structure Of Compounds 16a16c And 16ementioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Facile synthesis of benzimidazolin-2-chalcogenones: Nature of the carbon–chalcogen bond

Manjare

Sharma

Singh

et al. 2012

Journal of Organometallic Chemistry

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“…5c and d). [32][33][34][35][36][37] In the sole element of group 17 that is relevant to this perspective, the presence of three lone pairs and two bonding pairs at the acceptor iodine necessitates a linear geometry. The acceptor chemistry of molecular I 2 is not widely recognized and may appear unusual.…”

Section: Electronic Structure From Molecular Structurementioning

confidence: 99%

Phosphine complexes of lone pair bearing Lewis acceptors

Chitnis

Burford

2015

Dalton Trans.

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An overview of the synthesis, structures and reaction chemistry of coordination complexes featuring an acceptor with at least one lone pair and at least one phosphine donor is presented. One or more examples of complexes have been structurally-characterized for the majority of p-block elements but few are known for most elements. The unusual condition of a p-block element centre accommodating a lone pair of electrons and offering a low energy LUMO gives the element centre the potential to behave as both a Lewis acid and a Lewis Base. The structural diversity and reactivity of the phosphine complexes highlights new directions in main group chemistry and by comparison with transition metal coordination chemistry, the featured complexes demonstrate significant configurational and stereochemical flexibility. Ligand exchange, oxidation and reduction chemistry at the lone pair bearing acceptor centre reveals unusual reactivity and an interesting class of ligands and inorganic reagents, with new possibilities for catalysis or small molecule activation.

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Hypervalent Derivatives of Selenium and Tellurium

Drabowicz

Kiełbasiński

Zając

2011

Patai's Chemistry of Functional Groups

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The chapter presents the advances in the chemistry of hypervalent derivatives of selenium and tellurium that have emerged in recent years (usually after 1998). These are based on the inclusion of the discussed compounds into particular subsections, arising from the N‐Ch‐L (A n B m ) coding system, in which N stands for the number of valence electrons associated formally with a central chalcogen atom and L shows the number of ligands (A and B stand for the bonding element). The chapter begins with a brief discussion on the nature of bonding, molecular geometry, basic reactivity and pseudorotation mechanisms in hypervalent selenium and tellurium molecules which can be described as 10‐Ch‐4 and 10‐Ch‐5 and 12‐Ch‐6 species. Next, the unstable hypervalent selenium and tellurium structures detected as reactive intermediates are discussed. The remaining part of the chapter is devoted to the presentation of the chemistry of stable compounds. The isolable derivatives are presented in the following order: selenuranes and telluranes, 10‐Ch‐5 and 12‐Ch‐5 species, 10‐Ch‐6 complexes of perchalcogenuranes with Lewis bases, 12‐Ch‐6 perchalcogenuranes, 12‐Ch‐5 perchalcogenuranes, and 2N‐Ch‐N charged pertelluranes (Ch = Te, N > 6).

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Donor−Acceptor Chemistry at Heavy Chalcogen Centers

Cited by 58 publications

References 56 publications

Facile synthesis of benzimidazolin-2-chalcogenones: Nature of the carbon–chalcogen bond

Facile synthesis of benzimidazolin-2-chalcogenones: Nature of the carbon–chalcogen bond

Phosphine complexes of lone pair bearing Lewis acceptors

Hypervalent Derivatives of Selenium and Tellurium

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