Vorwort der Abteilungsherausgeber

Discrete and 1D Polymeric Copper(II) Complexes of Tetranuclear Cubane‐like Units: Structural and Magnetic Characterization

“…Mergehenn and Haase have proposed a classification of cubane-like complexes considering the distribution of Cu À O distance values within the cube. [11][12][13] Thus, compounds having four long Cu À O distances between two pseudodimeric units have been classified of type I (displaying dominant antiferromagnetic interactions), while compounds with a pair of long distances within each of the pseudodimeric units have been classified of type II (displaying dominant ferromagnetic interactions). On the other hand, based on Cu⋅⋅⋅Cu distances Ruiz et al [14] classified cubane compounds as: (i)[2 + 4], complexes with two short and four long Cu⋅⋅⋅Cu distances; (ii) [4 + 2], complexes with four short and two long Cu⋅⋅⋅Cu distances; (iii) [6 + 0], complexes with six equivalent Cu⋅⋅⋅Cu distances.…”

Fabrication and Characterization of Near‐Net‐Shape In Situ Reaction‐Bonded Porous Cordierite/SiC Ceramics

“…Some examples of the applications are refractory products, such as kiln furniture, refractory-lined chambers, and gas burners for industrial furnaces, heat exchangers for gas turbines engines, catalyst carriers, etc. [1][2][3][4][5] The low intrinsic strength of cordierite can be compensated by the presence of secondary phases such as mullite, 6,7 zircon, 8 and SiC. 9 Mullite and SiC by themselves are excellent refractory materials with good thermal shock resistance.…”