Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Why Do B–P and Al–P Polymers Differ? Structures, Stability, and Electronic Properties of Chain and Ring [H2PEH2]n Oligomers (E=B, Al; n=1–15). / Pomogaeva, Anna V.; Scheer, Manfred; Timoshkin, Alexey Y.
в: Chemistry - A European Journal, Том 24, № 64, 24.10.2018, стр. 17046-17054.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Why Do B–P and Al–P Polymers Differ? Structures, Stability, and Electronic Properties of Chain and Ring [H2PEH2]n Oligomers (E=B, Al; n=1–15)
AU - Pomogaeva, Anna V.
AU - Scheer, Manfred
AU - Timoshkin, Alexey Y.
PY - 2018/10/24
Y1 - 2018/10/24
N2 - Chain and ring [H2PEH2]n oligomers (E=B, Al; n=2–15) have been computationally studied at the B3LYP/def2-TZVP level of theory. A strong tendency to cyclization was found for the chain Al–P oligomers with n>7, whereas analogous long B–P oligomers can exist as chain structures. Subsequent oligomerization enthalpies approach each other very closely for the ring and chain oligomers with an increase of n. However, these oligomers have very different electronic properties with band gaps below 0.2 eV for the chain [H2PBH2]15 and more than 5 eV for the ring isomer [H2PEH2]15. The molecular orbitals in the ring oligomers are highly delocalized, whereas for the chain isomers, the HOMO and LUMO are localized at the different ends of the oligomeric chain.
AB - Chain and ring [H2PEH2]n oligomers (E=B, Al; n=2–15) have been computationally studied at the B3LYP/def2-TZVP level of theory. A strong tendency to cyclization was found for the chain Al–P oligomers with n>7, whereas analogous long B–P oligomers can exist as chain structures. Subsequent oligomerization enthalpies approach each other very closely for the ring and chain oligomers with an increase of n. However, these oligomers have very different electronic properties with band gaps below 0.2 eV for the chain [H2PBH2]15 and more than 5 eV for the ring isomer [H2PEH2]15. The molecular orbitals in the ring oligomers are highly delocalized, whereas for the chain isomers, the HOMO and LUMO are localized at the different ends of the oligomeric chain.
KW - density functional calculations
KW - donor–acceptor systems
KW - electronic structures
KW - oligomerization
KW - phosphanylalane
KW - phosphanylborane
KW - MOLECULAR-STRUCTURE
KW - CRYSTAL-STRUCTURE
KW - PHOSPHANYLBORANES
KW - CATALYZED FORMATION
KW - PHOSPHORUS-BORON BONDS
KW - BASE
KW - ALUMINUM
KW - donor-acceptor systems
KW - SET MODEL CHEMISTRY
KW - PHOSPHINE-BORANE ADDUCTS
KW - ENERGIES
UR - http://www.scopus.com/inward/record.url?scp=85055474892&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/bp-alp-polymers-differ-structures-stability-electronic-properties-chain-ring-h2peh2n-oligomers-eb-al
U2 - 10.1002/chem.201803008
DO - 10.1002/chem.201803008
M3 - Article
C2 - 30091202
AN - SCOPUS:85055474892
VL - 24
SP - 17046
EP - 17054
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
SN - 0947-6539
IS - 64
ER -
ID: 35950291