Research output: Contribution to journal › Article › peer-review
Stability of Molecular Complexes of Iodine and Iodine Monochloride with Nitrogen-Containing Donors. / Помогаева, Анна Владимировна; Лисовенко, Анна Сергеевна; Тимошкин, Алексей Юрьевич.
In: Russian Journal of General Chemistry, Vol. 94, No. Suppl. 1, 21.03.2024, p. S40-S46.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Stability of Molecular Complexes of Iodine and Iodine Monochloride with Nitrogen-Containing Donors
AU - Помогаева, Анна Владимировна
AU - Лисовенко, Анна Сергеевна
AU - Тимошкин, Алексей Юрьевич
PY - 2024/3/21
Y1 - 2024/3/21
N2 - Quantum chemical computations at M06-2X/def2-TZVPD level of theory were employed to compute structural and thermodynamic properties of gaseous donor-acceptor complexes IX·LB [X = I, Cl; LB = trimethylamine, triethylamine, pyridine, 2-aminopyridine, 4,4′-bipyridine, pyrazine, 1,2-bis(4-pyridyl)ethylene,1,2-bis(4-pyridyl)ethane]. Iodine monochloride is a stronger Lewis acid compared to the molecular iodine. With respect to homogeneous gas phase dissociation into components, the complex of ICl with triethylamine is the most stable and the complex of I2 with pyrazine is the least stable. It is shown that dissociation enthalpies do not correlate with proton affinity of the Lewis base, but there is a good correlation between dissociation enthalpies and I–X bond lengthening upon complex formation. This allows to estimate the stability of the complex based onits structural data.
AB - Quantum chemical computations at M06-2X/def2-TZVPD level of theory were employed to compute structural and thermodynamic properties of gaseous donor-acceptor complexes IX·LB [X = I, Cl; LB = trimethylamine, triethylamine, pyridine, 2-aminopyridine, 4,4′-bipyridine, pyrazine, 1,2-bis(4-pyridyl)ethylene,1,2-bis(4-pyridyl)ethane]. Iodine monochloride is a stronger Lewis acid compared to the molecular iodine. With respect to homogeneous gas phase dissociation into components, the complex of ICl with triethylamine is the most stable and the complex of I2 with pyrazine is the least stable. It is shown that dissociation enthalpies do not correlate with proton affinity of the Lewis base, but there is a good correlation between dissociation enthalpies and I–X bond lengthening upon complex formation. This allows to estimate the stability of the complex based onits structural data.
KW - donor-acceptor bond
KW - iodine
KW - iodine monochloride
KW - molecular complexes
KW - quantum chemical computations
UR - https://www.mendeley.com/catalogue/dc997af6-08c0-3faf-812d-c02e72e5f601/
U2 - 10.1134/s1070363224140068
DO - 10.1134/s1070363224140068
M3 - Article
VL - 94
SP - S40-S46
JO - Russian Journal of General Chemistry
JF - Russian Journal of General Chemistry
SN - 1070-3632
IS - Suppl. 1
ER -
ID: 117818658