Metal Halide Ammines. 1. Thermal Analyses, Calorimetry, and Infrared Spectra of Cadmium Halide (Cl, Br, I) Derivatives

1971 ◽  
Vol 49 (23) ◽  
pp. 3831-3835 ◽  
Author(s):  
K. C. Patil ◽  
E. A. Secco
Keyword(s):  
Spectral Data ◽  
Infrared Spectra ◽  
Thermal Analyses ◽  
Decomposition Reaction ◽  
Metal Halide ◽  
Calorimetric Measurements ◽  
Infrared Spectral

The thermal analyses of cadmium halide hexammines reveal that decomposition occurs by loss of ammonia via the diammine and the monoammine. Calorimetric measurements along with related enthalpic values for the intermediate stable stages of the decomposition reaction are given.The infrared spectral data of the diammines and monoammines are presented with their assignments.

Metal Halide Ammines. II. Thermal Analyses, Calorimetry and Infrared Spectra of Fluoride Ammines and Hydrates of Bivalent Metals

1972 ◽  
Vol 50 (4) ◽  
pp. 567-573 ◽  
Author(s):  
K. C. Patil ◽  
E. A. Secco
Keyword(s):  
Spectral Data ◽  
Infrared Spectra ◽  
Thermal Analyses ◽  
Metal Halide ◽  
Metal Fluoride ◽  
Bivalent Metal ◽  
Calorimetric Measurements ◽  
Infrared Spectral ◽  
Bivalent Metals ◽  
Experimental Values

Thermal analyses of bivalent metal fluoride ammines reveal that decomposition occurs in two or more steps. Calorimetric measurements along with related enthalpic values of the various decomposition steps are given.The infrared spectral data of the ammines and hydrates are compared with theoretical and some experimental values already in the literature.

Metal Halide Ammines. III. Thermal Analyses and Calorimetry of Fluorosilicate Ammines and Hydrates of Bivalent Metals. Infrared Spectra of the Ammines

1975 ◽  
Vol 53 (16) ◽  
pp. 2426-2429 ◽  
Author(s):  
Kashinath C. Patil ◽  
Etalo A. Secco
Keyword(s):  
Spectral Data ◽  
Infrared Spectra ◽  
Thermal Analyses ◽  
Calorimetric Data ◽  
Ammonia Loss ◽  
Bivalent Metal ◽  
Decomposition Reactions ◽  
Infrared Spectral ◽  
Bivalent Metals ◽  
And Calorimetry

Bivalent metal fluorosilicate ammines have been prepared. The thermal analyses of the dodecammines reveal the decomposition to occur via the pentammine and/or tetrammine. The final ammonia loss is concomitant with fluorosilicate decomposition. Calorimetric data are given for the decomposition reactions. Some fluorosilicate hydrates are included for comparison purposes.The infrared spectral data of the ammines are presented with their assignments.

Studies on metal hydroxy compounds. XI. Thermal analyses, decomposition kinetics, and infrared spectra of cadmium and zinc halide derivatives

1970 ◽  
Vol 48 (17) ◽  
pp. 2656-2661 ◽  
Author(s):  
P. Ramamurthy ◽  
E. A. Secco
Keyword(s):  
Model Equation ◽  
Thermal Analyses ◽  
Decomposition Reaction ◽  
Decomposition Kinetics ◽  
Frequency Region ◽  
First Order ◽  
Calorimetric Measurements ◽  
Infrared Spectral ◽  
Hydroxy Compounds ◽  
Kinetics Of

The thermal analyses of Cd2(OH)3X type of basic halides reveal that the decomposition occurs via a two-step dehydroxylation pattern, yielding CdOHX as an intermediate product after the initial mode. These results suggest that Cd2(OH)3X is an addition compound of the hydroxide and the 1:1 hydroxy-halide, i.e. Cd(OH)2•CdOHX. Calorimetric measurements along with related enthalpy values for the decomposition reaction are given.The kinetics of thermal decomposition of the compounds are classified into two main groups: (i) two-dimensional contracting plate model equation and (ii) first-order rate law.The infrared spectral data of thirteen Cd and Zn basic halides in the frequency region 4000–250 cm−1 are presented with their assignments.

Studies on metal hydroxy compounds. XII. Thermal analyses, decomposition kinetics, and infrared spectra of copper basic oxysalts

1970 ◽  
Vol 48 (22) ◽  
pp. 3510-3519 ◽  
Author(s):  
P. Ramamurthy ◽  
E. A. Secco
Keyword(s):  
Thermal Analyses ◽  
Three Dimensional ◽  
Decomposition Reaction ◽  
Sphere Model ◽  
First Order ◽  
Calorimetric Measurements ◽  
Infrared Spectral ◽  
Anionic Species ◽  
Hydroxy Compounds ◽  
Kinetics Of

The thermal analyses of copper basic oxysalts of the type Cu2(OH)2XOy, where X = S, C, Cl, Br, I, N, HC and y = 4, 3, or 2 reveal that decomposition occurs, in most cases, by dehydroxylation with concomitant disproportionation of the oxysalt. An outstanding exception to this pattern of decomposition is the basic sulfate. Calorimetric measurements along with related enthalpic values for the decomposition reaction are given.The kinetics of thermal decomposition of the compounds are classified into three main categories: (i) three-dimensional contracting sphere model, (ii) first-order rate, and (iii) nucleation controlled rate processes.The infrared spectral data of nine copper basic oxycompounds in the frequency region 4000–250 cm−1 are presented with their assignments. The fundamental infrared inactive modes of the anionic species SO42−, NO3−, etc. become active by the presence of the copper hydroxide ligand indicating a lowering of symmetry in the anion.

Studies on metal hydroxy compounds. X. Thermal analyses, decomposition kinetics, and infrared spectra of lead halide (Cl, Br, I) derivatives

1970 ◽  
Vol 48 (16) ◽  
pp. 2617-2622 ◽  
Author(s):  
P. Ramamurthy ◽  
E. A. Secco ◽  
M. Badri
Keyword(s):  
Infrared Spectra ◽  
Rate Equation ◽  
Thermal Analyses ◽  
Decomposition Reaction ◽  
Diffusion Type ◽  
Type Rate ◽  
Hydroxy Compounds ◽  
Kinetics Of ◽  
Lead Halide ◽  
Order Rate Equation

The thermal analyses, thermogravimetry (TG), and differential thermal analysis (DTA) of PbOHCl, PbOHBr, and PbOHI reveal that the initial mode of decomposition is via dehydroxylation. Calorimetric measurements along with related enthalpy values for the decomposition reaction are given.The infrared spectra of these compounds are interpreted in terms of folded bands of (PbOH+)n tied together by halide ions consistent with their crystal structures.The kinetics of thermal decomposition of lead hydroxyhalides follow a diffusion-type rate equation which is in contrast to the simple first-order rate equation observed for most Cd, Zn, and Cu compounds. These two distinct rates are interpreted in terms of mobile OH or H species in the dehydroxylation step.

Studies on Metal Hydroxy Compounds. XIII. Thermal Analyses and Decomposition Kinetics of Hydroxystannates of Bivalent Metals

1971 ◽  
Vol 49 (17) ◽  
pp. 2813-2816 ◽  
Author(s):  
P. Ramamurthy ◽  
E. A. Secco
Keyword(s):  
Thermal Analyses ◽  
Decomposition Reaction ◽  
Decomposition Kinetics ◽  
Order Reaction ◽  
First Order ◽  
Calorimetric Measurements ◽  
Bivalent Metals ◽  
Hydroxy Compounds ◽  
Kinetics Of ◽  
Subsequent Decomposition

The thermal analyses of hexahydroxystannates of bivalent metals of the type Me[Sn(OH)6], where Me = Zn, Co, Cu, Ni, Mn, Ca, Mg, Cd, Sr, reveal that the primary mode of decomposition occurs by dehydroxylation and subsequent decomposition of the metastannate residue occurs in the Zn, Cu, Mn, Ca, and Mg compounds. Calorimetric measurements along with related enthalpic values for the decomposition reaction are given. The kinetics of thermal decomposition of all compounds studied, except the Cd and Mg analogues, follow first order reaction kinetics up to α ~ 0.9.

scholarly journals Vibrational Mode Coupling to Reverse Electron Transfer in (CN)5FeCNRu(NH3)5− in Solution

1999 ◽  
Vol 19 (1-4) ◽  
pp. 385-387
Author(s):  
Chengfei Wang ◽  
Boris Akhremitchev ◽  
Gilbert C. Walker
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Spectral Data ◽  
Infrared Spectra ◽  
High Frequency ◽  
Mode Coupling ◽  
Vibrational Mode ◽  
Time Resolved ◽  
Reverse Electron Transfer ◽  
Infrared Spectral

We present charge transfer absorption, resonance Raman and time-resolved infrared spectral data for (CN)5FeCNRu(NH3)5− in various solvents. The transient infrared spectra and anisotropies reveal both non-equilibrium vibrational populations of high frequency modes and local solvent heating.

Infrared Spectra of Trimethylamine-Carbon Monoxide-Borane and its Deuterated Derivatives

1974 ◽  
Vol 28 (5) ◽  
pp. 427-430 ◽  
Author(s):  
James C. Carter ◽  
George W. Luther ◽  
Alfred L. Moyé
Keyword(s):  
Carbon Monoxide ◽  
Low Temperature ◽  
Spectral Data ◽  
Infrared Spectra ◽  
Nmr Data ◽  
Infrared Spectral

Low temperature infrared spectral data are given for the adducts H3BC(O)N(CH3)3, D3BC(O)N(CH3)3, H3BC(O)N(CD)3)3)D3BC(O)N(CD3)3 over the range 3000 to 300 cm−1. Boron-11 NMR data are given for H3BCO and H3BC(O)N(CH3)3. The spectra allow the assignment of the structure of the adducts as [Formula: see text]

Structure of donor-acceptor complexes. X. Complexes of cyanoacetamide with Lewis acids

1969 ◽  
Vol 22 (7) ◽  
pp. 1381 ◽  
Author(s):  
RC Paul ◽  
SL Chadha
Keyword(s):  
Oxygen Atom ◽  
Spectral Data ◽  
Infrared Spectra ◽  
Lewis Acids ◽  
Far Infrared ◽  
Carbonyl Oxygen ◽  
Aluminium Chloride ◽  
Infrared Spectral ◽  
Donor Acceptor ◽  
Ionic Nature

Complexes of cyanoacetamide with aluminium chloride and bromide, anti- mony(V) chloride, boron(III) bromide, tin(IV) chloride and bromide, titanium(IV) chloride and bromide, and zirconium(IV) chloride have been prepared. The molar conductances of the complexes in nitrobenzene indicate their non-ionic nature. The infrared spectra indicate bonding of the metal halides to the carbonyl oxygen atom of the ligand. Metal- to-oxygen bonding also gets support from the far-infrared spectral data.

Complex Fluorides with Perovskite Structure: Thermal Analyses, Calorimetry, and Infrared Spectra

1972 ◽  
Vol 50 (10) ◽  
pp. 1529-1530 ◽  
Author(s):  
K. C. Patil ◽  
E. A. Secco
Keyword(s):  
Thermal Decomposition ◽  
Infrared Spectra ◽  
Perovskite Structure ◽  
Thermal Analyses ◽  
Infrared Spectral ◽  
Complex Fluorides

Thermal decomposition and infrared spectral results are reported for complex fluorides of the type NH4MF3 where M = Cd, Zn, Cu, Ni, Co, Mn.

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