Synthesis, Structure, and Haptotropic Interconversions of Tungsten Cycloheptatrienyl–Acetonitrile–Carbonyl Complexes

I. V. Skabitskii; P. V. Rusina; A. A. Pasynskii; Yu V. Torubaev; S. G. Sakharov

doi:10.1134/S1070328419050038

Synthesis, Structure, and Haptotropic Interconversions of Tungsten Cycloheptatrienyl–Acetonitrile–Carbonyl Complexes

I. V. Skabitskii, P. V. Rusina, A. A. Pasynskii, Yu V. Torubaev, S. G. Sakharov

Research output: Contribution to journal › Article › peer-review

Abstract

Abstract: Tungsten cycloheptatrienyl complexes (η⁷-C₇H₇)W(CO)₂I (I), [(η³-C₇H₇)W(CO)₂(CH₃CN)₃]PF₆ (II), and [(η⁷-C₇H₇)W(CO)₂(CH₃CN)]PF₆ (III) (CIF files CCDC nos. 1875096 (I), 1875097 (II), 1875098 (III)), characterized earlier only by spectroscopic methods, were prepared and studied by X-ray diffraction. The tris(acetonitrile) complex II can lose two acetonitrile ligands in both coordinating and non-coordinating solvents with the η³ → η⁷ change in the hapticity of the cycloheptatrienyl ring to be converted to III. The reverse ligand attachment process with the η⁷ → η³ change in the hapticity of the cycloheptatrienyl ring takes place upon the dissolution of monoacetonitrile complex III in acetonitrile. The electron-compensating η³ ↔ η⁷ change in the hapticity of the tropylium ligand is reversible.

Original language	English
Pages (from-to)	427-432
Number of pages	6
Journal	Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
Volume	45
Issue number	6
DOIs	https://doi.org/10.1134/S1070328419050038
State	Published - 1 Jun 2019
Externally published	Yes

Keywords

X-ray diffraction
cycloheptatrienyl complexes
haptotropic transformations
tungsten complexes

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering

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10.1134/S1070328419050038

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@article{d67353a077194261a4707f89180c446e,

title = "Synthesis, Structure, and Haptotropic Interconversions of Tungsten Cycloheptatrienyl–Acetonitrile–Carbonyl Complexes",

abstract = "Abstract: Tungsten cycloheptatrienyl complexes (η7-C7H7)W(CO)2I (I), [(η3-C7H7)W(CO)2(CH3CN)3]PF6 (II), and [(η7-C7H7)W(CO)2(CH3CN)]PF6 (III) (CIF files CCDC nos. 1875096 (I), 1875097 (II), 1875098 (III)), characterized earlier only by spectroscopic methods, were prepared and studied by X-ray diffraction. The tris(acetonitrile) complex II can lose two acetonitrile ligands in both coordinating and non-coordinating solvents with the η3 → η7 change in the hapticity of the cycloheptatrienyl ring to be converted to III. The reverse ligand attachment process with the η7 → η3 change in the hapticity of the cycloheptatrienyl ring takes place upon the dissolution of monoacetonitrile complex III in acetonitrile. The electron-compensating η3 ↔ η7 change in the hapticity of the tropylium ligand is reversible.",

keywords = "X-ray diffraction, cycloheptatrienyl complexes, haptotropic transformations, tungsten complexes",

author = "Skabitskii, {I. V.} and Rusina, {P. V.} and Pasynskii, {A. A.} and Torubaev, {Yu V.} and Sakharov, {S. G.}",

note = "Publisher Copyright: {\textcopyright} 2019, Pleiades Publishing, Ltd.",

year = "2019",

month = jun,

day = "1",

doi = "10.1134/S1070328419050038",

language = "English",

volume = "45",

pages = "427--432",

journal = "Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya",

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TY - JOUR

T1 - Synthesis, Structure, and Haptotropic Interconversions of Tungsten Cycloheptatrienyl–Acetonitrile–Carbonyl Complexes

AU - Skabitskii, I. V.

AU - Rusina, P. V.

AU - Pasynskii, A. A.

AU - Torubaev, Yu V.

AU - Sakharov, S. G.

PY - 2019/6/1

Y1 - 2019/6/1

N2 - Abstract: Tungsten cycloheptatrienyl complexes (η7-C7H7)W(CO)2I (I), [(η3-C7H7)W(CO)2(CH3CN)3]PF6 (II), and [(η7-C7H7)W(CO)2(CH3CN)]PF6 (III) (CIF files CCDC nos. 1875096 (I), 1875097 (II), 1875098 (III)), characterized earlier only by spectroscopic methods, were prepared and studied by X-ray diffraction. The tris(acetonitrile) complex II can lose two acetonitrile ligands in both coordinating and non-coordinating solvents with the η3 → η7 change in the hapticity of the cycloheptatrienyl ring to be converted to III. The reverse ligand attachment process with the η7 → η3 change in the hapticity of the cycloheptatrienyl ring takes place upon the dissolution of monoacetonitrile complex III in acetonitrile. The electron-compensating η3 ↔ η7 change in the hapticity of the tropylium ligand is reversible.

AB - Abstract: Tungsten cycloheptatrienyl complexes (η7-C7H7)W(CO)2I (I), [(η3-C7H7)W(CO)2(CH3CN)3]PF6 (II), and [(η7-C7H7)W(CO)2(CH3CN)]PF6 (III) (CIF files CCDC nos. 1875096 (I), 1875097 (II), 1875098 (III)), characterized earlier only by spectroscopic methods, were prepared and studied by X-ray diffraction. The tris(acetonitrile) complex II can lose two acetonitrile ligands in both coordinating and non-coordinating solvents with the η3 → η7 change in the hapticity of the cycloheptatrienyl ring to be converted to III. The reverse ligand attachment process with the η7 → η3 change in the hapticity of the cycloheptatrienyl ring takes place upon the dissolution of monoacetonitrile complex III in acetonitrile. The electron-compensating η3 ↔ η7 change in the hapticity of the tropylium ligand is reversible.

KW - X-ray diffraction

KW - cycloheptatrienyl complexes

KW - haptotropic transformations

KW - tungsten complexes

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DO - 10.1134/S1070328419050038

M3 - Article

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SN - 1070-3284

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JO - Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya

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ER -

Synthesis, Structure, and Haptotropic Interconversions of Tungsten Cycloheptatrienyl–Acetonitrile–Carbonyl Complexes

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