Thermochemical studies of two copper(II) complexes with N-benzoyl-N ',N '-dialkylurea derivatives

• Type: Article in International Scientific Journal
• Date: 2001

Authors

da Silva, MAVR (Author) FCUP; da Silva, MDMCR (Author) FCUP; da Silva, LCM (Author) Other; Dietze, F (Author) Other; Hoyer, E (Author) Other

Journal

Title: Thermochimica Acta

Vol. 378

Pages: 45-50

ISSN: 0040-6031

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 16 Citations

Scopus - 13 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-000-T06

DOI: 10.1016/s0040-6031(01)00626-8

Abstract (EN): The standard (p(0) = 0.1 MPa) molar enthalpies of formation of crystalline bis(N-benzoyl-N',N'-diethylureato)copper(II), Cu(BETU)(2), and bis(N-benzoyl-N',N'-diisobutylureato)copper(II), Cu(BIBU)(2), were measured, at T = 298.15 K, by solution-reaction isoperibol calorimetry, respectively, as -(833.7 +/- 9.7) and -(1050.6 +/- 12.1) U mol(-1). The standard molar enthalpy of sublimation, at T = 298.15 K, of Cu(BETU)(2) Was determined by a Knudsen effusion technique as (180 +/- 37) kJ mol(-1). These values were used to derive the standard molar enthalpy of formation of Cu(BETU)(2) in gaseous phase, and to evaluate the mean metal-ligand dissociation enthalpy of the complex relative to that of the ligand with hydrogen.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6