Second sphere coordination complexes via hydrogen bonding: Synthesis, spectroscopic characterisation of [trans-Co(en)2Cl2]CdX4 (X=Br or I) and single crystal X-ray structure determination of [trans-Co(en)2Cl2]CdBr4

The effect of remote substitution on the formation of preferential isomers of cobalt(iii)-tetrazolate complexes by microwave assisted cycloaddition

“…29 The results obtained are in good agreement with similar types of (ethylenediamine)cobalt complexes reported earlier. [30][31][32] All the transisomers show a single peak in the range of 4.47-5.41 ppm, attributed to the nitrogen protons of ethylenediamine, while the CH 2 protons are observed in the range of 2.01-2.45 ppm. Some additional protons in the aromatic region observed for compound trans-7 may be attributed to the presence of free benzonitrile, which might have been entrapped the crystallization of the compound.…”

Crystal Structure and Spectroscopic Characterization of a New Hybrid Compound, (C12H17N2)2[CdBr4], for Energy Storage Applications

“…Within the [CdBr 4 ] 2– tetrahedra, the Cd–Br distances range from 2.5295(6) to 2.6167(6) Å while the Br–Cd–Br angles vary between 101.73(18) and 116.58(2)° (Table ). These values are consistent with those observed in other compounds containing CdBr 4 tetrahedra, such as (CH 3 NH 3 ) 2 CdBr 4 and (C 5 H 6 N 2 Cl) 2 [CdBr 4 ].H 2 O. − Taking into account these distances and angles and using the distortion equations indices (DI) of Baur: DI false( normalCd − normalBr false) = falsefalse ∑ i = 1 n 1 false| d i − d m false| 4 d m normal; 0.25em DI false( normalBr − normalCd − normalBr false) = falsefalse ∑ i = 1 n 2 false| a i − a m false| 6 a m where, d = Cd–Br distance, a = Br–Cd–Br angle and m = average value.…”

[N,N’-diethyl-4,4′-bipyridinium][CdX4] (X = Cl or Br) with N,N’-diethyl-4,4′-bipyridinium generated in situ: An Effective Route to Viologen Compounds

“…A search of the Cambridge Crystallographic Data Centre (CCDC) revealed that many [CdX 4 ] 2--containing (X = Cl or Br) compounds have been found thus far. [22][23][24][25][26] Amongst them the counterpart cations are various but none of them is MQ 2+ or MV 2+ moieties. As a result, compounds 1 and 2 are the first compounds having both [CdX 4 ] 2and MQ 2+ moieties.…”