Crystal Structures of Two Polymorphic Modifications and Thermodynamic Parameters of Vaporization of Copper Bis(heptafluorodimethyloctanedionate)

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发表日期：

2024年7月1日

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P. A. Stabnikov,
M. A. Bespyatov,
I. V. Korolkov,
A. S. Sukhikh,
P. E. Plyusnin,
S. V. Trubin,
A. V. Sartakova,
S. V. Sysoev

摘要

Abstract

Crystals of copper bis(heptafluorodimethyloctanedionate) (Cu(fod)₂) have been grown by evaporation of solvent from solutions. Crystals of monoclinic syngony (I) have been obtained from toluene, while crystals of monoclinic (I) and triclinic (II) syngony have been obtained from acetonitrile. Crystallographic data: P2₁/c, a = 13.1863 (6), b = 9.8118 (4), c = 10.6997 (6), β = 113.633(2)° for I; \(\bar {1}\) , a = 10.7941(12), b = 11.4759(14), c = 12.5263(13), α = 115.350(4)°, β = 102.957(4)°, γ = 100.999(4)° for II. Crystal packings I and II have the same structure of molecules. Crystal structures I and II are molecular and consist of discrete Cu(fod)₂ molecules. Temperature dependences for saturated vapor pressure have been obtained by flow method for liquid and crystalline (phase I) Cu(fod)₂ in the range 314–393 K. Thermal stability of the compound is determined, thermodynamic parameters of sublimation and evaporation have been established.