trans-Bis(N,N-diethylethylenediamine)nickel(II) dibromide

Abstract

Key indicators: single-crystal X-ray study; T = 100 K; mean (C-C) = 0.002 Å; R factor = 0.019; wR factor = 0.050; data-to-parameter ratio = 13.9.The structure of the title compound, [Ni(C 6 Related literatureThe synthesis of a broad variety of Ni(Et 2 en) 2 X 2 compounds is described by Goodgame & Venanzi (1963 containing a square-planar centrosymmetric cation has been identified as having triclinic (Ikeda et al., 1995;Narayanan & Bhadbhade, 1998) and monoclinic (Hayami et al., 2009) polymorphs. ExperimentalCrystal data [Ni(C 6

A One‐Dimensional π–d Conjugated Coordination Polymer for Sodium Storage with Catalytic Activity in Negishi Coupling

“…Moreover, the bond length of Ni−N is shorter than that in the coordination materials containing saturated ligands (ca. 1.92 Å) . All of these results agreed well with the experimental characterizations and indicated the strong π–d delocalization in Ni‐BTA.…”

“…1.92 ). [61] All of these results agreed well with the experimental characterizations and indicated the strong p-d delocalization in Ni-BTA. This strong p-d delocalization should be advantageous to the charge transport and high-rate performance.The XRD patterns could be wellsimulated by Pawley refinement with negligible difference between the experimental and simulated results.T he six peaks thereby can be indexed to (011), (021), (030), (022), (042), and (033), respectively.H igh-resolution TEM images ( Figure 2f T he comparable interactions along three directions are probably the reason for forming 3D nanobricks.T he theoretical predicted BFDH morphology [54] of Ni-BTAa re also very consistent with the experimental results on both shapes and relative dihedral angles (Figure 2e;S upporting Information, Figures S3 and S11).…”

A one-dimensional π-d conjugated coordination polymer for sodium storage with catalytic activity in Negishi coupling

“…1.92 ). [61] All of these results agreed well with the experimental characterizations and indicated the strong p-d delocalization in Ni-BTA. This strong p-d delocalization should be advantageous to the charge transport and high-rate performance.The XRD patterns could be wellsimulated by Pawley refinement with negligible difference between the experimental and simulated results.T he six peaks thereby can be indexed to (011), (021), (030), (022), (042), and (033), respectively.H igh-resolution TEM images ( Figure 2f)s howed clear lattice fringes with d-spacing about 3.7 ,w hich is quite close to the d-spacing (23.68 8,3 .77 )o f (030).…”

Phase Transitions and Crystal Structures of Ni(II) Complexes Determined with X-ray Powder Diffraction Data

“…On the other hand, the 2a undergoes a hydration transition to [Ni(Et 2 en) 2 (H 2 O) 2 ]Br 2 (2b) by humidification, and water molecules are supposed to be coordinated to Ni(II) [2]. The crystal structures of 1a and 2a have been reported [8,9], while their structures after the dehydration (1b) and hydration (2b) have not yet been reported. In this study, transition phenomena accompanied by dehydration (1a → 1b) and hydration (2a → 2b) and their reverse processes have been reinvestigated by simultaneous measurements of powder X-ray diffraction (XRD) and differential scanning calorimetry (DSC) data under the temperature and humidity controls.…”