Thermodynamic properties of pentaphenylantimony Ph5Sb over the range from T→0K to 400K

Thermodynamic characteristics of triphenylantimony diacrylate

“…According to the thermogravimet ric analysis data, the thermal destruction of the com pound starts at 430 K, which can explain the behavior of the dependence of on Т (D'E region). This behavior is also characteristic for the organic deriva tives of pentavalent antimony that we studied earlier Ph 5 Sb [5], Ph 4 SbONCPh 2 [6], Ph 4 SbONCPhMe [7], and Ph 3 Sb(O 2 CCMe=CH 2 ) 2 [9].…”

“…Figure 3 shows a fragment of a one dimensional chain of Ph 3 Sb(O 2 CCH=CH 2 ) 2 molecules observed in crys tals. The organic derivatives of pentavalent antimony studied earlier [5][6][7][8][9] also have a chain layered struc ture topology.…”

“…The thermodynamic charac teristics of the organic derivatives of pentavalent anti mony were not sufficiently studied [4]. We examined the standard thermodynamic properties of pentaphe nylantimony Ph 5 Sb [5], tetraphenylantimony ben zophenone oximate Ph 4 SbONCPh 2 [6], tetrapheny lantimony acetophenone oximate Ph 4 SbONCPhMe [7], triphenylantimony bis(acetophenone oximate) Ph 3 Sb(ONCPhMe) 2 [8], and triphenylantimony dimethacrylate Ph 3 Sb(O 2 CCMe=CH 2 ) 2 [9], at tem peratures from 0 to 350-450 K.…”

Calorimetric Study of Triphenylbismuth Dimethacrylate Ph3Bi(O2CCMe═CH2)2

“…3,4 The physicochemical investigation of these types of compounds is an actual task. Previously, we focused on the thermodynamic properties of the organic derivatives of pentavalent antimony (pentaphenylantimony Ph 5 Sb, 5 tetraphenylantimony benzophenoneoxymate Ph 4 SbONCPh 2 , 6 tetraphenylantimony acetophenoneoxymate Ph 4 SbONCPhMe, 7 ■ EXPERIMENTAL SECTION Synthesis and Characterization of Triphenylbismuth Dimethacrylate Ph 3 Bi(O 2 CCMeCH 2 ) 2 . Triphenylbismuth dimethacrylate Ph 3 Bi(O 2 CCMeCH 2 ) 2 was obtained by the method of oxidative addition from triphenylbismuth, hydrogen peroxide, and an excess of methacrylic acid, mixed in the 1:1:3 ratio, respectively 13…”

“…The physicochemical investigation of these types of compounds is an actual task. Previously, we focused on the thermodynamic properties of the organic derivatives of pentavalent antimony (pentaphenylantimony Ph 5 Sb, tetraphenylantimony benzophenoneoxymate Ph 4 SbONCPh 2 , tetraphenylantimony acetophenoneoxymate Ph 4 SbONCPhMe, triphenylantimony bis (acetophenoneoxymate) Ph 3 Sb­(ONCPhMe) 2 , , triphenylantimony diacrylate Ph 3 Sb­(O 2 CCHCH 2 ) 2 , triphenylantimony dimethacrylate Ph 3 Sb­(O 2 CCMeCH 2 ) 2 , and triphenylantimony bis (1-adamantanecarboxylate) Ph 3 Sb­[OC­(O)­C 10 H 15 ] 2 ). The present paper is devoted to the calorimetric study of triphenylbismuth dimethacrylate Ph 3 Bi­(O 2 CCMeCH 2 ) 2 over the temperature range from T = 5.3 to 420 K, detection of possible physical transitions, the calculation of the standard thermodynamic functions, namely, C p,m o , H m o ( T ) – H m o (0), S m o ( T ), and Φ m o ( T ) from T → 0 to 385 K, and the standard entropy of formation, Δ f S m o at T = 298.15 K for crystalline Ph 3 Bi­(O 2 CCMeCH 2 ) 2 .…”