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The relationship between properties of fluorinated graphite intercalates and matrix composition
Part II. Intercalates with chloroform
Abstract
Inclusion compounds (intercalates) of fluorinated graphite matrix with chloroform (C2FxBrz·yCHCl3, x=0.49, 0.69, 0.87, 0.92, z=0.01) were synthesized by guest substitution from acetonitrile to chloroform. The kinetics of the thermal decomposition (the 1st stage of filling → the 2nd stage of filling) was studied under isothermal conditions at 286–311 K. The relationship between the structure of matrices intercalates with thermal properties and kinetic parameters of inclusion compounds is discussed.
Abstract
Inclusion compounds (intercalates) of fluorinated graphite matrix with 1,2-dichloroethane (C2FxBrz·yC2H4Cl2, x=0.49, 0.69, 0.87, 0.92, z≈0.01) were synthesized by guest substitution from acetonitrile to dichloroethane. The kinetics of the thermal decomposition (the 1st stage of filling→the 2nd stage of filling) was studied under isothermal conditions at 289–313 K. The relationship between the structure of host matrices with thermal properties and kinetic parameters of inclusion compounds is discussed.
Abstract
Terthiophene included in a perhydrotriphenylene (PHTP) adduct exhibits an UV spectrum different from that observed in the bulk or in solution. The X-ray diffraction pattern also differs significantly from that of pure PHTP. The UV spectrum is interpreted as due to an isolated molecule in a vacuum-like space, in agreement with a model developed from X-ray diffraction data. Knowledge of the phase diagram was essential for an interpretation of the optical properties and of some kinetic aspects of the formation of the inclusion compound phase. In this work, the phase diagrams of terthiophene (T3) are presented, and DSC evidence of the inclusion of quater- (T4), penta- (T5)and α,ω-dihexylquaterthiophene (DH4T) is discussed.
Abstract
Derivatographic and calorimetric measurements were used to study the thermal properties of combined inclusion compounds of zeolite-cyclodextrin type and of zeolite-cyclodextrin-pharmaceutical type. There were differences in the characteristic decomposition temperature intervals and in the modes of cyclodextrin and pharmaceutical liberation from the products. Calorimetric measurements revealed that the process in the newly-formed complex host is connected with a glass transition. The products are intended for use in veterinary medicine.
Abstract
Inclusion compounds: intercalates of fluorinated graphite matrix with acetonitrile (C2FxBrz yCH3CN, x=0.92, 0.87, 0.69 and 0.49, z≈0.01) were synthesized. The kinetics of the thermal decomposition (the 1st stage of filling→the 2nd stage of filling) was studied under isothermal conditions. The relationship between intercalates properties and composition and structure of the matrix is discussed.
Abstract
The binary systems of urea with polyethylene glycols 6000 and 4000 show inclusion compounds with higher melting points than the two components (m.p. 143 and 142.5°C resp.). From the melt unstable forms crystallize beside the stable crystal modifications. These have also been identified by FTIR microscopy and X-ray powder diffractometry. The phase diagrams are uncommon in so far as the inclusion compounds do not form eutectics but monotectics with both components. The inclusion compounds of the two polyethylene glycols with urea are isomorphous and form a series of mixed crystals following the Roozeboom I type of diagram.
Abstract
A 
molecular rocket
using nuclear recoil in metallocene inclusion complex has been studied. Sublimatographic separation of liberated metallocene molecule from metallocene cyclodextrin complex suggested that at least a small fraction was due to this molecular rocket process with soft landing, which causes no serious decomposition. In the retention-recoil energy relation, analysis also revealed a part which suggested the presence of the molecular rocket with and without decomposition.
Cl 2 ]Cl, [Ni(en) 2 Cl 2 ], and [Cu(en) 2 (H 2 O) 2 ]Cl 2 trans-complexes are encapsulated with the formation of stable supramolecular inclusion compounds. In compliance with the structural investigations [ 2 ], the compound compositions are: { trans
Abstract
Tetracyanocomplex clathrates and their changes caused by heating were studied. The intermediates formed were characterized by IR and UV-VIS spectroscopy. Elemental analysis and XRD patterns were also used. For the visualisation of changes occurring on the surface and the distribution of metallic elements therein were studied by electron microscopy and EDX. The extent of the non-stoichiometric changes introduced by the topochemical course of the degradation reactions was correlated with the measured electrical values.
