Structures and Chemical Bonding in Antimony(III) Bromide Complexes with Pyridine

Prokudina, Yana V.; Davydova, E. I.; Вировец, А. В.; Stöger, Berthold; Peresypkina, Eugenia V.; Pomogaeva, Anna V.; Timoshkin, Alexey Y.

doi:10.1002/chem.202002261

Cited by 10 publications

(10 citation statements)

References 79 publications

(167 reference statements)

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“…where, R (A−B) is the interatomic distance between elements A and B, r cov is the sum of covalent and r vdw is the sum of van der Waals radii of the elements A and B. It was demonstrated, that NCC value correlates well with E (2) value for the complexes of antimony trihalides with pyridine 33 …”

Section: Methodsmentioning

confidence: 98%

Lewis acid stabilized group 13–15 element analogs of ethylene

et al. 2022

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Stabilization of hydrogen‐substituted group 13–15 compounds H2EE′H2 (E = B, Al, Ga; E′ = P, As, Sb) by Lewis acids is considered at B3LYP/def2‐TZVP, B3LYP‐D3/def2‐TZVP and M06‐2X/def2‐TZVP levels of theory. It is shown, that for many Lewis acids additional reactivity beyond the DA complex formation with H2EE′H2 monomer is expected. In case of complexation with E(C6F5)3, F/H exchange reactions with group 13 bound hydrides are predicted to be exothermic and accompanied by the activation energies which are smaller than dissociation of the complex into components. In case of complex formation with transition metal (TM) carbonyls, additional O → Al, TM–C → Al interactions are observed, which in several cases lead to cyclic structures. The most promising candidates for the experimental studies have been identified. Synthetic approaches to the most promising LA‐only stabilized compounds are recommended.

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Section: Methodsmentioning

confidence: 98%

Lewis acid stabilized group 13–15 element analogs of ethylene

et al. 2022

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“…Several noteworthy reviews are available in the literature, indicating the relevance of PnBs in the gas and solid states. In fact, this interaction has been used as a consistent tool in crystal engineering [43,44,[91][92][93].…”

Section: Pnictogen Bondingmentioning

confidence: 99%

On the Importance of σ–Hole Interactions in Crystal Structures

Frontera

Bauzá

2021

Crystals

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Elements from groups 14–18 and periods 3–6 commonly behave as Lewis acids, which are involved in directional noncovalent interactions (NCI) with electron-rich species (lone pair donors), π systems (aromatic rings, triple and double bonds) as well as nonnucleophilic anions (BF4−, PF6−, ClO4−, etc.). Moreover, elements of groups 15 to 17 are also able to act as Lewis bases (from one to three available lone pairs, respectively), thus presenting a dual character. These emerging NCIs where the main group element behaves as Lewis base, belong to the σ–hole family of interactions. Particularly (i) tetrel bonding for elements belonging to group 14, (ii) pnictogen bonding for group 15, (iii) chalcogen bonding for group 16, (iv) halogen bonding for group 17, and (v) noble gas bondings for group 18. In general, σ–hole interactions exhibit different features when moving along the same group (offering larger and more positive σ–holes) or the same row (presenting a different number of available σ–holes and directionality) of the periodic table. This is illustrated in this review by using several examples retrieved from the Cambridge Structural Database (CSD), especially focused on σ–hole interactions, complemented with molecular electrostatic potential surfaces of model systems.

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“…Note, the molecular structure of 4 is similar to the structure of Sb 2 Br 6 Py 4 [12] and In 2 Br 6 Py 4 [27] complexes and [Sb 2 X 6 L 2 ] 1 coordination polymers (X = Cl, Br, I; L = 4,4'-bipyridine; 1,2-bis(4pyridyl)ethylene; 1,2-bis(4-pyridyl)ethane). [28] The SbÀ N bond lengths in SbI 3 complex are by ca.…”

Section: Resultsmentioning

confidence: 70%

“…[4,9] Thus, lone pair of antimony of triphenyl antimony derivatives forms halogen bonds with iodine atoms of 1,3,5-trifluoro-2,4,6triiodobenzene. [10] On the other hand, in complexes of antimony trichloride [11] and tribromide [12] with pyridine antimony increases coordination number to six by forming pnictogen bonds in which the lone pair of halogen coordinates to sigma-hole on the continuation of antimony-halogen bonds.…”

Section: Introductionmentioning

confidence: 99%

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Antimony(III) Iodide Complexes with Pyridine: Structures and bonding via three pnictogen bonds

Pomogaeva

Khoroshilova

Davydova

et al. 2021

Zeitschrift anorg allge chemie

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Solid state structures of five new molecular complexes of SbI 3 with Py have been determined by single crystal X-ray structural analysis. In all complexes, all antimony atoms adopt a pseudooctahedral coordination geometry, which is completed by additional Sb•••I contacts shorter than sum of van der Waals radii, with IÀ Sb•••I angles close to 180°. Analysis of the electrostatic potentials, the orbital interactions and topological analysis indicate that these contacts are due to the presence of Sb•••I pnictogen bonds. The first example of three pnictogen bonds of SbI 3 is reported.

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Structures and Chemical Bonding in Antimony(III) Bromide Complexes with Pyridine

Cited by 10 publications

References 79 publications

Lewis acid stabilized group 13–15 element analogs of ethylene

Lewis acid stabilized group 13–15 element analogs of ethylene

On the Importance of σ–Hole Interactions in Crystal Structures

Antimony(III) Iodide Complexes with Pyridine: Structures and bonding via three pnictogen bonds

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