220600-01-1Relevant academic research and scientific papers
The molecular structure of copper(II) chloroacetate complexes wit 5,7-dimethyl-1,2,4-triazolo-[1,5-α]-pyrimidine and 5,7-diphenyl-1,2,4-triazolo-[1,5-α]-pyrimidine
Grodzicki, A.,Szlyk, E.,Wojtczak, A.,Wrzeszcz, G.,Pazderski, L.,Muziol, T.
, p. 519 - 528 (2008/10/08)
Copper(II) complexes of formula Cu2(CH2ClCOO)4(dmtp)2 (1) and Cu2(CN2ClCOO)4(dptp)2 (2), where dmtp=5,7-dimethyl-1,2,4-triazolo-[1,5-α]-pyrimidine and dptp=5,7-diphenyl-1,2,4-triazolo-[1,5-α]-pyrimidine, were obtained. The X-ray diffraction analysis of 1 exhibited the dimericstructure with chloroacetate bridges. The coordination sphere of Cu(II) ion is a slightly dostorted square pyramid, with 4 equatorial carboxyli c oxygens and an axially N(3) bonded dmtp molecule. The distance Cu-Cu is 2.7035(7) ? and the distance between Cu and O4 plane is 0.239(1) ? (towards the axial ligand). The distances Cu-O are 1,954(2)-1.981(2) ?, Cu-N 2,150(1) ?. The angles O-Cu-O are 87.88(8)-90.56(8)° and 166.04(6)-166.07(5)°, O-Cu-N 90.08(7)-103.76(7)°. The O4 plane is not perperndicular to the Cu...Cu line, the angles O-Cu-Cu being 82.04(5)-84.00(5)° and N-Cu-Cu 169.54(4)° Spectroscopic (IR, UV, EPR) and magnetic studies suggested that 2 has the analogous structure to 1.
