Photochemistry of cis,trans-[PtIV(en)(I)2(CH3COO)2] complex in aqueous solutions

E. M. Glebov; I. P. Pozdnyakov; I. M. Magin; V. P. Grivin; V. F. Plyusnin; D. B. Vasil’chenko; A. V. Zadesenets; A. A. Mel’nikov; S. V. Chekalin

doi:10.1007/s11172-019-2588-y

Photochemistry of cis,trans-[Pt^IV(en)(I)₂(CH₃COO)₂] complex in aqueous solutions

E. M. Glebov, I. P. Pozdnyakov, I. M. Magin, V. P. Grivin, V. F. Plyusnin, D. B. Vasil’chenko, A. V. Zadesenets, A. A. Mel’nikov, S. V. Chekalin

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

1 Цитирования (Scopus)

Аннотация

The photochemistry of aqueous solutions of the cis,trans-[Pt^IV(en)(I)₂(CH₃COO)₂] complex (1) was studied by stationary photolysis, nanosecond laser flash photolysis and ultrafast kinetic spectroscopy in the time interval from hundreds of femtoseconds to minutes. It is shown that the multistage photolysis, including photochemical reactions of ligand exchange and photoreduction, involves in the fi rst step the formation of the cis-[^IV(en)(I)₂(CH₃COO)₂] complex with a quantum yield of 0.3 (irradiation at 282 nm). The further ligand exchange and photoreduction reactions occur with much lower quantum yields. The photochemical exchange of the acetate ion occurs in a time interval of ~100 ps with the much slower final step, being probably the acidic dissociation of the product. The key intermediate of the first step of the process was detected in the picosecond time range. Depending on the interpretation of the key intermediate nature, two possible mechanisms of the primary photochemical process are proposed.

Язык оригинала	английский
Страницы (с-по)	1532-1541
Число страниц	10
Журнал	Russian Chemical Bulletin
Том	68
Номер выпуска	8
DOI	https://doi.org/10.1007/s11172-019-2588-y
Состояние	Опубликовано - 1 авг. 2019

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10.1007/s11172-019-2588-y

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title = "Photochemistry of cis,trans-[PtIV(en)(I)2(CH3COO)2] complex in aqueous solutions",

abstract = "The photochemistry of aqueous solutions of the cis,trans-[PtIV(en)(I)2(CH3COO)2] complex (1) was studied by stationary photolysis, nanosecond laser flash photolysis and ultrafast kinetic spectroscopy in the time interval from hundreds of femtoseconds to minutes. It is shown that the multistage photolysis, including photochemical reactions of ligand exchange and photoreduction, involves in the fi rst step the formation of the cis-[IV(en)(I)2(CH3COO)2] complex with a quantum yield of 0.3 (irradiation at 282 nm). The further ligand exchange and photoreduction reactions occur with much lower quantum yields. The photochemical exchange of the acetate ion occurs in a time interval of ~100 ps with the much slower final step, being probably the acidic dissociation of the product. The key intermediate of the first step of the process was detected in the picosecond time range. Depending on the interpretation of the key intermediate nature, two possible mechanisms of the primary photochemical process are proposed.",

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Photochemistry of cis,trans-[Pt^IV(en)(I)₂(CH₃COO)₂] complex in aqueous solutions. / Glebov, E. M.; Pozdnyakov, I. P.; Magin, I. M. и др.

В: Russian Chemical Bulletin, Том 68, № 8, 01.08.2019, стр. 1532-1541.

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

TY - JOUR

T1 - Photochemistry of cis,trans-[PtIV(en)(I)2(CH3COO)2] complex in aqueous solutions

AU - Glebov, E. M.

AU - Pozdnyakov, I. P.

AU - Magin, I. M.

AU - Grivin, V. P.

AU - Plyusnin, V. F.

AU - Vasil’chenko, D. B.

AU - Zadesenets, A. V.

AU - Mel’nikov, A. A.

AU - Chekalin, S. V.

PY - 2019/8/1

Y1 - 2019/8/1

N2 - The photochemistry of aqueous solutions of the cis,trans-[PtIV(en)(I)2(CH3COO)2] complex (1) was studied by stationary photolysis, nanosecond laser flash photolysis and ultrafast kinetic spectroscopy in the time interval from hundreds of femtoseconds to minutes. It is shown that the multistage photolysis, including photochemical reactions of ligand exchange and photoreduction, involves in the fi rst step the formation of the cis-[IV(en)(I)2(CH3COO)2] complex with a quantum yield of 0.3 (irradiation at 282 nm). The further ligand exchange and photoreduction reactions occur with much lower quantum yields. The photochemical exchange of the acetate ion occurs in a time interval of ~100 ps with the much slower final step, being probably the acidic dissociation of the product. The key intermediate of the first step of the process was detected in the picosecond time range. Depending on the interpretation of the key intermediate nature, two possible mechanisms of the primary photochemical process are proposed.

AB - The photochemistry of aqueous solutions of the cis,trans-[PtIV(en)(I)2(CH3COO)2] complex (1) was studied by stationary photolysis, nanosecond laser flash photolysis and ultrafast kinetic spectroscopy in the time interval from hundreds of femtoseconds to minutes. It is shown that the multistage photolysis, including photochemical reactions of ligand exchange and photoreduction, involves in the fi rst step the formation of the cis-[IV(en)(I)2(CH3COO)2] complex with a quantum yield of 0.3 (irradiation at 282 nm). The further ligand exchange and photoreduction reactions occur with much lower quantum yields. The photochemical exchange of the acetate ion occurs in a time interval of ~100 ps with the much slower final step, being probably the acidic dissociation of the product. The key intermediate of the first step of the process was detected in the picosecond time range. Depending on the interpretation of the key intermediate nature, two possible mechanisms of the primary photochemical process are proposed.

KW - diiodo-Pt complexes

KW - photochemistry

KW - UV spectroscopy

KW - VISIBLE-LIGHT

KW - PLATINUM COMPLEX

KW - PHOTODYNAMIC THERAPY

KW - DNA

KW - PHOTOPHYSICS

KW - diiodo-Pt-IV complexes

KW - IRCL62-COMPLEX

KW - SPECTRA

KW - TRANS

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DO - 10.1007/s11172-019-2588-y

M3 - Article

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SP - 1532

EP - 1541

JO - Russian Chemical Bulletin

JF - Russian Chemical Bulletin

SN - 1066-5285

IS - 8

ER -