Chemistry can be defined as the study of matter and the changes it undergoes. You’ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 767-69-1, Name is 6-Bromo-7H-purine, molecular formula is , belongs to piperidines compound. In a document, author is Malik, Sunita, Name: 6-Bromo-7H-purine.
Excess molar volumes and excess isentropic compressibilities of liquid mixtures formed by tetrahydropyran, piperidine and cyclic ketones at temperature from 293.15 to 308.15 K.
The densities, rho, rho(123) and speeds of sound, u, u(123) of binary Tetrahydropyran (1) Piperidine (2) and ternary Tetrahydropyran (1) Piperidine (2) + Cyclohexanone or Cycloheptanone (3) mixtures have been measured over the whole range of mole fraction at 293.15, 298.15, 303.15, 308.15 K and atmospheric pressure. The observed data have been utilized to determine excess molar volumes, (V-E)(12), V-123(E) and excess isentropic compressibilities, (kappa(E)(S))(12,) (kappa(E)(S))(123) for the binary and ternary liquid mixtures respectively. The (V-E)(12), V-123(E) and (kappa(E)(S))(12,) (kappa(E)(S))(123) data have been fitted to Redlich-Kister equation to determine binary as well as ternary adjustable parameters along with standard deviations. The Moelywn-Huggins concept of interaction between the surfaces of the binary mixture constituents has been extended (Graph theory) to evaluate excess molar volumes and excess isentropic compressibilities of ternary mixtures using the concept of connectivity parameter of third degree of molecules, (3)xi (which deals with the topology of the constituents in pure and mixed state) to obtain an expression that describe well the measured data. (C) 2017 Elsevier B.V. All rights reserved.
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Reference:
Piperidine – Wikipedia,
,Piperidine | C5H11N – PubChem