TY - JOUR
T1 - The synthesis, chemical and physical properties of silver(I) carboxylates and their use for joining of copper
AU - Frenzel, Peter
AU - Hausner, Susann
AU - Korb, Marcus
AU - Wagner, Guntram
AU - Lang, Heinrich
PY - 2018/10/1
Y1 - 2018/10/1
N2 - The synthesis of [AgO2CCR2OC(O)OMe] (6, R = H; 7, R = Me) by treatment of HO2CCR2OC(O)OMe (4, R = H; 5, R = Me) with [AgNO3] in presence of NEt3 is reported. The reaction of 6 and 7 with 2 equiv of PPh3 gave [AgO2CCR2OC(O)OMe(PPh3)(2)] (8, R = H; 9, R = Me). The thermal behavior of 6 and 7 was studied by TG, DSC and TG-MS of which the latter evinced decarboxylation as initial decomposition step followed by Ag-C, C-C and C-O bond cleavages giving silver. For copper-to-copper joining, 6 and 7 were processed to spreadable pastes by mixing them with ethylene glycol (EG) or diethylene glycol (DEG). On contact of 7-EG with Cu sheets [Cu-2(O2CCMe2OC(O)OMe)(4).2H(2)O] (12) was formed. Therefore, only 6-EG and 6-DEG were used for pressureless joining of Cu at 250 degrees C. Thru addition of Ag mu m-particles a tensile shear strength of 19 MPa was achieved, showing a significant higher value as received with commercially Ag nanopastes. The solid state structure of 5, 8, 9 and 12 was determined by single crystal X-ray structure analysis, showing [3+1] (P2O + O) (8), distorted tetrahedral (9) or octahedral (12) coordination spheres at the metal ion. (C) 2018 Published by Elsevier B.V.
AB - The synthesis of [AgO2CCR2OC(O)OMe] (6, R = H; 7, R = Me) by treatment of HO2CCR2OC(O)OMe (4, R = H; 5, R = Me) with [AgNO3] in presence of NEt3 is reported. The reaction of 6 and 7 with 2 equiv of PPh3 gave [AgO2CCR2OC(O)OMe(PPh3)(2)] (8, R = H; 9, R = Me). The thermal behavior of 6 and 7 was studied by TG, DSC and TG-MS of which the latter evinced decarboxylation as initial decomposition step followed by Ag-C, C-C and C-O bond cleavages giving silver. For copper-to-copper joining, 6 and 7 were processed to spreadable pastes by mixing them with ethylene glycol (EG) or diethylene glycol (DEG). On contact of 7-EG with Cu sheets [Cu-2(O2CCMe2OC(O)OMe)(4).2H(2)O] (12) was formed. Therefore, only 6-EG and 6-DEG were used for pressureless joining of Cu at 250 degrees C. Thru addition of Ag mu m-particles a tensile shear strength of 19 MPa was achieved, showing a significant higher value as received with commercially Ag nanopastes. The solid state structure of 5, 8, 9 and 12 was determined by single crystal X-ray structure analysis, showing [3+1] (P2O + O) (8), distorted tetrahedral (9) or octahedral (12) coordination spheres at the metal ion. (C) 2018 Published by Elsevier B.V.
KW - Silver(I) carboxylate
KW - TG-(MS)/DSC
KW - Solid state structure
KW - Silver sintering
KW - Low temperature joining
KW - ETHYLENE-GLYCOL CARBOXYLATES
KW - DEPENDENT MELTING-POINT
KW - MECHANICAL-PROPERTIES
KW - CRYSTAL-STRUCTURE
KW - SHEAR-STRENGTH
KW - AG NANOPASTE
KW - NANOPARTICLES
KW - JOINTS
KW - PASTE
KW - PARTICLES
U2 - 10.1016/j.ica.2018.04.022
DO - 10.1016/j.ica.2018.04.022
M3 - Article
SN - 0020-1693
VL - 482
SP - 503
EP - 513
JO - Inorganica Chemica Acta
JF - Inorganica Chemica Acta
ER -