A Porous Flexible Homochiral SrSi₂ Array of Single‐Stranded Helical Nanotubes Exhibiting Single‐Crystal‐to‐Single‐Crystal Oxidation Transformation

Abstract

Chirale Nanoröhre: Ein flexibles poröses homochirales SrSi2‐Gerüst aus zwei Arten einzelsträngiger helicaler Nanoröhren wird beschrieben (siehe Struktur). Die CuI‐Ionen im Gerüst können durch Einkristall‐Einkristall‐Umwandlung zu CuII oxidiert werden, wobei eine neue, topologisch äquivalente Phase gebildet wird. Das Volumen der Elementarzelle nimmt um 12.51 % zu.

Cu(II)-Metal–Organic Framework with Open Coordination Metal Sites for Low Temperature Thermochemical Water Oxidation

“…As shown in Figures and , the observation of Cu 2p 3/2 peak at 931.49 eV in XPS of MOF- 2 demonstrated the reduction from Cu­(II) in MOF- 1 (934.82 eV) to Cu­(I) in MOF- 2 . The binding energy peak shift of 3.33 eV is well consistent with the reported difference of binding energy peak between Cu­(II) and Cu­(I). , …”

“…MOF- 1 is a very unusual network (Schläfli symbol {4 ̂ 3.6 ̂ 2.8}); we are unaware of a precedent despite the large number of four-connected networks reported in the literature. The X-ray photoelectron spectroscopy (XPS) indicates that the copper cation in MOF- 1 is bivalent, , which is well in agreement with the single-crystal analysis (Figure ).…”

Efficient Catalytic Performance for Acylation-Nazarov Cyclization Based on an Unusual Postsynthetic Oxidization Strategy in a Fe(II)-MOF

“…As functional carriers, the different chemical valences of center metals are responsible for the discrepancy in material performance. 35,36 This feature may be most salient in the activities of catalyst materials. 37 The MOFs-based catalysts have been rapidly developed because of high catalytic activity, recyclable, and preeminent selectivity.…”

Co–Ca Phosphonate Showing Humidity-Sensitive Single Crystal to Single Crystal Structural Transformation and Tunable Proton Conduction Properties

“…To solve these problems, an efficient approach is to perform a detailed study of single crystal to single crystal (SC−SC) transformations, which can provide a precise visualization about the structural change during the humidity variation and correlate this to AC impedance experiments done on single crystals. 42,43 So far, a number of MOFs or CPs have been found to experience SC−SC transformations, induced by light, 44−46 heat, 47,48 guest exchange, 49−51 oxidation of metal centers, 52,53 and chemical reactions. 54 However, descriptions of the humidity-dependent reversible SC−SC transformations are very limited.…”