A comparison between the solid state structures and solution behaviour of molecular complexes formed between primary alkylammonium salts and chiral crown ethers incorporating 1,2:4,6-diacetals of D-mannitol

Author(s):  
Steven E. Fuller ◽  
J. Fraser Stoddart ◽  
David J. Williams
2012 ◽  
Vol 65 (7) ◽  
pp. 823 ◽  
Author(s):  
Karen D. M. MaGee ◽  
Guy Travers ◽  
Brian W. Skelton ◽  
Massimilliano Massi ◽  
Alan D. Payne ◽  
...  

N-Heterocyclic carbene–nickel complexes with five- and four-coordinate geometries [(CNC)NiBr2] and [(CNC)NiBr]X (X = PF6 or BPh4) have been prepared with the pincer ligands 2,6-bis(N-octylbenzimidazolin-2-ylidene)pyridine and 2,6-bis(N-butyl-5,6-dimethoxybenzimidazolin-2-ylidene)pyridine. The addition of the n-octyl substituent significantly extends the solubility of the complexes and has allowed UV-vis solution studies of the complexes in dichloromethane and methanol. The four- and five-coordinate species exist in equilibrium in solution and this equilibrium has been explored by UV-vis studies. The complexes have also been characterized by NMR studies, and single crystal X-ray diffraction studies have been performed on [(CNC)NiBr2] (where CNC = 2,6-bis(N-octylbenzimidazolin-2-ylidene)pyridine) and [(CNC)NiBr]BPh4 (where CNC = 2,6-bis(N-butyl-5,6-dimethoxybenzimidazolin-2-ylidene)pyridine).


2010 ◽  
Vol 39 (28) ◽  
pp. 6410 ◽  
Author(s):  
Dana Copolovici ◽  
Vilma R. Bojan ◽  
Ciprian I. Raţ ◽  
Anca Silvestru ◽  
Hans J. Breunig ◽  
...  

RSC Advances ◽  
2014 ◽  
Vol 4 (51) ◽  
pp. 26569-26576 ◽  
Author(s):  
Dana Copolovici ◽  
Francesco Isaia ◽  
Hans J. Breunig ◽  
Ciprian I. Raţ ◽  
Cristian Silvestru

The stibines R(Ph)SbCl (1) and R(Mes)2Sb (2) (R = 2-Me2NCH2C6H4) were used to obtain [Me2NHCH2C6H5]+[PdCl3{SbCl(Ph)R}]¬ (3) and [PdCl2{Sb(Mes)2R-N,Sb}] (4). While in 3 the intramolecular N→Sb interaction is preserved, in compound 4 the stibine 2 acts as a (N,Sb)-chelating ligand.


Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3393
Author(s):  
Mikhail A. Vershinin ◽  
Marianna I. Rakhmanova ◽  
Alexander S. Novikov ◽  
Maxim N. Sokolov ◽  
Sergey A. Adonin

Reactions between Zn(II) dihalides and 2-halogen-substituted pyridines 2-XPy result in a series of heteroleptic molecular complexes [(2-XPy)2ZnY2] (Y = Cl, X = Cl (1), Br (2), I (3); Y = Br, X = Cl (4), Br (5), I (6), Y = I, X = Cl (7), Br (8), and I (9)). Moreover, 1–7 are isostructural (triclinic), while 8 and 9 are monoclinic. In all cases, halogen bonding plays an important role in formation of crystal packing. Moreover, 1–9 demonstrate luminescence in asolid state; for the best emitting complexes, quantum yield (QY) exceeds 21%.


Polymer ◽  
2004 ◽  
Vol 45 (12) ◽  
pp. 4009-4015 ◽  
Author(s):  
Bin Zhang ◽  
Shanju Zhang ◽  
Lidia Okrasa ◽  
Tadeusz Pakula ◽  
Tim Stephan ◽  
...  

2017 ◽  
Vol 139 (46) ◽  
pp. 16696-16707 ◽  
Author(s):  
Andrey A. Fokin ◽  
Tatyana S. Zhuk ◽  
Sebastian Blomeyer ◽  
Cristóbal Pérez ◽  
Lesya V. Chernish ◽  
...  

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