Supramolecular Cations of (S)‐, (R)‐, and (RS)‐Indan‐1‐aminium(dibenzo[18]crown‐6) in Magnetic [Ni(dmit)₂]^– Salts

Abstract

Magnetic crystals were formed using supramolecular cation structures that consist of (S)--ions (dmit 2-= 2-thioxo-1,3-dithiole-4,5-dithiolate), which bear one S = 1/2 spin. The resulting salts, (S)-

Crystal Structure and Dielectric Property of (p‐CH3OC6H4NH3)+(18‐crown‐6)·H2PO4–·2H3PO4

“…However, the temperature‐dependent dielectric constant of 1 at 1 MHz shows no anomalies only with a smooth increase from 4.9 to 8.2 in the temperature range 100–383K (Figure 3), together with the dielectric loss tangent (ϵ′′/ϵ′) (from 0.05 to 0.99). This is probably because of the freezing of the molecular rotation in the measured temperature range, which is similar to that found in 1:1 complex of 18‐crown‐6 with 4‐ethoxyanilinium perchlorate or ( m ‐FAni) + (DB18‐crown‐6)[Ni(dmit) 2 ] – ((dmit) 2– = 2‐thioxo‐1, 3‐dithiole‐4, 5‐dithiolate, m ‐FAni = m ‐fluoroanilinium) 8–11. For 1 , the freezing of the molecular rotator would be activated at a relatively high temperature range.…”

“…So far there are many dielectric studies on pure inorganic compounds, such as tantalite, KDP and Rochelle salt, but examples on organic‐inorganic hybrid materials, which have the excellent properties of both organic and inorganic compounds, have remained sparse. Crown ethers are a kind of typical host molecules of organic‐inorganic hybrid compounds that arouse our interest 8–11. In these host‐guest compounds supramolecular packings afford room to result in various motions of the organic and inorganic components.…”

2-Methoxyethanaminium periodate 18-crown-6 clathrate

“…Various types of RNH 3 + structures (R =H, CH 3 , C 6 H 5 CH 2 , NH 2 , etc.) have been shown to form stable ammonium.crown ether complexes in the solid state (Akutagawa et al, 2005(Akutagawa et al, , 2009). …”

“…Various types of RNH 3 + structures (R = H, CH 3 , C 6 H 5 CH 2 , NH 2 , etc.) have been shown to form stable ammonium crown ether complexes in the solid state, see: Akutagawa et al (2005Akutagawa et al ( , 2009 Table 1 Hydrogen-bond geometry (Å , ). Symmetry codes: (i) Àx þ 1; y þ 1 2 ; Àz þ 1 2 ; (ii) Àx þ 1; y À 1 2 ; Àz þ 1 2 ; (iii) Àx; y þ 1 2 ; Àz þ 1 2 .…”

Synthesis, structure and dielectric deuterated effect of a novel organic–inorganic hybrid compound

“…A large number of organic-inorganic isomorphous compounds, like (CH 3 ) 2 NH 2 H 2 PO 4 [2], (CH 3 ) 2 NH 2 H 2 AsO 4 [3,4], β-NH 3 (CH 2 ) 2 NH 3 HPO 4 [5] and (NC 4 H 4 NH 2 )·H 3 PO 4 [6], belonging to the widely described family of AH 2 BO 4 type (where A = K, Cs, NH 4 and B = P, As), which are obtained by substitution of potassium by organic ammonium cations, have also been found to display excellent dielectric property. Crown ether is a kind of typical subject molecule of organic-inorganic hybrid that arouses our interest [7], where interesting H-bond interactions and supramolecular packing structures result in the motion space for organic cation and phase transition. Meanwhile, inorganic phosphate containing several active hydrogen atoms can provide affluent hydrogen bonds which make great contribution to the configuration, accumulation methods, dielectric and ferroelectric properties.…”