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[en] The thermal decompositions of [Mg(NH3)6](NO3)2, [Ni(NH3)6](NO3)2 and [Ni(ND3)6](NO3)2 were studied by thermal gravimetry analysis (TGA) and simultaneous differential thermal analysis (SDTA) at a constant heating rate. The gaseous products of the decomposition were on-line identified by a quadruple mass spectrometer (QMS).The solid products were identified on the basis of Fourier transform mid infrared spectra (FT-MIR) and X-ray powder diffraction (XRPD) patterns. Deamination of hexaaminemagnesium nitrate(V) to diaminemagnesium nitrate(V) undergoes in two steps and two-third of the all NH3 molecules are liberated. Deamination of both hexaaminenickel(II) nitrates(V) (non-deuterated and deuterated) to the diamines undergoes in three steps, and at two first steps one half of the NH3 molecules are liberated. The thermal decomposition of [Ni(NH3)2](NO3)2 and [Ni(ND3)2](NO3)2 is also different than that of [Mg(NH3)2](NO3)2. In both cases the decomposition is connected with the redox processes, but in the case of magnesium compound, contrary to the nickel compounds, in the second stage, besides of liberation of nitrogen, nitrogen oxides and H2O, undergoes the liberation of NH3 and the formation of Mg(NO3)2, which in turn decomposes next, in the third stage, to the oxygen, nitrogen oxides and MgO. This third stage is not present in the case of both nickel compounds, and the decomposition of diaminenickel(II) nitrates(V) undergoes directly to the final products (NiO1+x, nitrogen, nitrogen oxides and H2O) without the formation of Ni(NO3)2, because of the autocatalytic effect of the formed NiO
Journal
[en] Nuclear magnetic resonance (1H NMR and 19F NMR) measurements performed at 90-295 K, inelastic incoherent neutron scattering (IINS) spectra and neutron powder diffraction (NPD) patterns registered at 22-190 K, and X-ray powder diffraction (XRPD) measurements performed at 86-293 K, provided evidence that the crystal of [Zn(NH3)4](BF4)2 has four solid phases. The phase transitions occurring at: TC3=101 K, TC2=117 K and TC1=178 K, as were detected earlier by differential scanning calorimetry (DSC), were connected on one hand only with an insignificant change in the crystal structure and on the other hand with a drastic change in the speed of the anisotropic, uniaxial reorientational motions of the NH3 ligands and BF4- anions (at TC3 and at TC2) and with the dynamical orientational order-disorder process ('tumbling') of tetrahedral [Zn(NH3)4]2+ and BF4- ions (at TC1). The crystal structure of [Zn(NH3)4](BF4)2 at room temperature was determined by XRPD as orthorhombic, space group Pnma (No. 62), a=10.523 A, b=7.892 A, c=13.354 A and Z=4. Unfortunately, it was not possible to determine the structure of the intermediate and the low-temperature phase. However, we registered the change of the lattice parameters and unit cell volume as a function of temperature and we can observe only a small deviation from near linear dependence of these parameters upon temperature in the vicinity of the TC1 phase transition
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Source
Wydzial Chemii Uniwersytetu Marii Curie-Sklodowskiej, Lublin (Poland); Polskie Towarzystwo Chemiczne, Lublin (Poland); Stowarzyszenie Inzynierow i Technikow Przemyslu Chemicznego, Oddzial w Pulawach (Poland); 1368 p; ISBN 83-901844-7-8; 
; 2003; p. 331; 46. Scientific Assembly of Polish Chemical Society and Association of Engineers and Technicians of Chemical Industry; 46. Zjazd Naukowy Polskiego Towarzystwa Chemicznego i Stowarzyszenia Inzynierow i Technikow Przemyslu Chemicznego; Lublin (Poland); 15-18 Sep 2003; Available at Polskie Towarzystwo Chemiczne, ul. Freta 16, Warsaw (PL); 1 fig., 1 tab.
; 2003; p. 331; 46. Scientific Assembly of Polish Chemical Society and Association of Engineers and Technicians of Chemical Industry; 46. Zjazd Naukowy Polskiego Towarzystwa Chemicznego i Stowarzyszenia Inzynierow i Technikow Przemyslu Chemicznego; Lublin (Poland); 15-18 Sep 2003; Available at Polskie Towarzystwo Chemiczne, ul. Freta 16, Warsaw (PL); 1 fig., 1 tab.
No abstract available
Source
Polskie Towarzystwo Chemiczne, Cracow (Poland); Wydzial Chemii, Uniwersytet Jagiellonski, Cracow (Poland); Wydzial Inzynierii Materialowej i Ceramiki, Akademia Gorniczo-Hutnicza, Cracow (Poland); Wydzial Inzynierii i Technologii Chemicznej, Politechnika Krakowska, Cracow (Poland); Instytut Katalizy i Fizykochemii Powierzchni, PAN, Cracow (Poland); 1280 p; ISBN 83-916418-0-5; ; 2002; p. 306; 45. Scientific Assembly of Polish Chemical Society; 45. Zjazd Naukowy Polskiego Towarzystwa Chemicznego; Cracow (Poland); 9-13 Sep 2002; Available at Instytut Chemii i Techniki Jadrowej, 03-195 Warsaw, Dorodna 16 (PL); 2 refs
; 2002; p. 306; 45. Scientific Assembly of Polish Chemical Society; 45. Zjazd Naukowy Polskiego Towarzystwa Chemicznego; Cracow (Poland); 9-13 Sep 2002; Available at Instytut Chemii i Techniki Jadrowej, 03-195 Warsaw, Dorodna 16 (PL); 2 refs
No abstract available
Source
Polskie Towarzystwo Chemiczne, Cracow (Poland); Wydzial Chemii, Uniwersytet Jagiellonski, Cracow (Poland); Wydzial Inzynierii Materialowej i Ceramiki, Akademia Gorniczo-Hutnicza, Cracow (Poland); Wydzial Inzynierii i Technologii Chemicznej, Politechnika Krakowska, Cracow (Poland); Instytut Katalizy i Fizykochemii Powierzchni, PAN, Cracow (Poland); 1280 p; ISBN 83-916418-0-5; ; 2002; p. 290; 45. Scientific Assembly of Polish Chemical Society; 45. Zjazd Naukowy Polskiego Towarzystwa Chemicznego; Cracow (Poland); 9-13 Sep 2002; Available at Instytut Chemii i Techniki Jadrowej, 03-195 Warsaw, Dorodna 16 (PL); 3 refs, 2 tabs
; 2002; p. 290; 45. Scientific Assembly of Polish Chemical Society; 45. Zjazd Naukowy Polskiego Towarzystwa Chemicznego; Cracow (Poland); 9-13 Sep 2002; Available at Instytut Chemii i Techniki Jadrowej, 03-195 Warsaw, Dorodna 16 (PL); 3 refs, 2 tabs
No abstract available
Source
Polskie Towarzystwo Chemiczne, Warsaw (Poland); Stowarzyszenie Inzynierow i Technikow Przemyslu Chemicznego, Warsaw (Poland); 339 p; ISBN 83-7171-381-9; ; 2000; p. 131; Jubilee Scientific Assembly of Polish Chemical Society and Association of Engineers and Technicians of Chemical Industry; Jubileuszowy Zjazd Naukowy Polskiego Towarzystwa Chemicznego i Stowarzyszenia Inzynierow i Technikow Przemyslu Chemicznego; Lodz (Poland); 10-15 Sep 2000; Available at Instytut Chemii i Techniki Jadrowej, 03-195 Warsaw, Dorodna 16 (PL); 2 refs, 1 tab.
; 2000; p. 131; Jubilee Scientific Assembly of Polish Chemical Society and Association of Engineers and Technicians of Chemical Industry; Jubileuszowy Zjazd Naukowy Polskiego Towarzystwa Chemicznego i Stowarzyszenia Inzynierow i Technikow Przemyslu Chemicznego; Lodz (Poland); 10-15 Sep 2000; Available at Instytut Chemii i Techniki Jadrowej, 03-195 Warsaw, Dorodna 16 (PL); 2 refs, 1 tab.
No abstract available
Source
Polskie Towarzystwo Chemiczne, Warsaw (Poland); Stowarzyszenie Inzynierow i Technikow Przemyslu Chemicznego, Warsaw (Poland); 339 p; ISBN 83-7171-381-9; ; 2000; p. 131; Jubilee Scientific Assembly of Polish Chemical Society and Association of Engineers and Technicians of Chemical Industry; Jubileuszowy Zjazd Naukowy Polskiego Towarzystwa Chemicznego i Stowarzyszenia Inzynierow i Technikow Przemyslu Chemicznego; Lodz (Poland); 10-15 Sep 2000; Available at Instytut Chemii i Techniki Jadrowej, 03-195 Warsaw, Dorodna 16 (PL); 3 refs, 1 tab
; 2000; p. 131; Jubilee Scientific Assembly of Polish Chemical Society and Association of Engineers and Technicians of Chemical Industry; Jubileuszowy Zjazd Naukowy Polskiego Towarzystwa Chemicznego i Stowarzyszenia Inzynierow i Technikow Przemyslu Chemicznego; Lodz (Poland); 10-15 Sep 2000; Available at Instytut Chemii i Techniki Jadrowej, 03-195 Warsaw, Dorodna 16 (PL); 3 refs, 1 tab
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