Novel heterometallic polymeric lanthanide acetylacetonates with bridging cymantrenecarboxylate groups – synthesis, magnetism and thermolysis

Magnetic Behavior of Carboxylate and β-Diketonate Lanthanide Complexes Containing Stable Organometallic Moieties in the Core-Forming Ligand

“…The polymeric chains of these compounds contain two types of alternating coordination centers, namely, Ln 3+ ions that coordinate the water/methanol molecules and the oxygen atoms of bridging carboxylate anions and Ln 3+ ions that coordinate the oxygen atoms of bridging and chelate carboxylate anions; in both cases, the coordination number (CN) of Ln equals eight ( Figure 4) [21]. To synthesize cymantrenecarboxylates with the ratio Ln:Mn = 1:1, we suggested an original technique with the use of hydrated lanthanide acetylacetonates as the starting reagents [22]. 1D-polymeric complexes [Ln(O2CCym)(acac)2(H2O)]n (Ln = Eu, Gd, Tb, Dy, Ho, Er) were obtained.…”

“…Thus, we proposed methods for the synthesis of new compounds, determined their molecular and crystal structures, studied their thermal behavior, as well as luminescent properties for Eu derivatives [15][16][17][18][19][20][21][22][23][24][25], but a detailed study of the magnetic behavior of some of the complexes was not carried out.…”

“…Figure 5). To synthesize cymantrenecarboxylates with the ratio Ln:Mn = 1:1, we suggested an original technique with the use of hydrated lanthanide acetylacetonates as the starting reagents [22]. 1D-polymeric complexes [Ln(O2CCym)(acac)2(H2O)]n (Ln = Eu, Gd, Tb, Dy, Ho, Er) were obtained.…”

Design and synthesis of coordination polymers with chelated units and their application in nanomaterials science

“…It should be noted isostructural CPs [Ln(L)(acac) 2 (H 2 O)] n (Ln ¼ Eu, Gd, Tb, Dy, Ho, Er; L ¼ (h 5 -C 5 H 4 )Mn(CO) 3 ), thermolysis of which in air and under Ar atmosphere leads to LnMnO 3 phases. 357 For the Dy and Ho chelates, adiabatic calorimetric data permit to calculate standard thermodynamic functions.…”

Researching the Earth—and a Few of Its Neighbors

“…For example, Kojitani et al (2015) used the model in Kieffer (1979c) to estimate heat capacities for MgSiO 3 (bridgmanite) in calculations of the postspinel phase boundary in Mg 2 SiO 4 . Gavrikov et al (2015) and Gavrichev et al (2015) used the methodology to smooth measured data for new structural complexes in the lanthanide acetylacetonates and for samarium-monazite (SmPO 4 ) in the context of properties of pegmatites and granites. Chang et al (2013) demonstrated that results from the simple model for K 2 SiSi 3 O 9 -wadeite are in good agreement with first-principles simulations.…”