1208170-67-5Relevant academic research and scientific papers
Synthesis, structure and luminescence behaviour of heptacoordinated one-dimensional coordination polymers of the type [Cd(L)(dca)]n(X)n (L = a pentadentate Schiff base; dca = dicyanamide; X =ClO4-, PF6-)
Sarkar, Bhola Nath,Bhar, Kishalay,Chattopadhyay, Soumi,Das, Sumitra,Mitra, Partha,Ghosh, Barindra Kumar
, p. 35 - 40 (2010)
Two heptacoordinated one-dimensional coordination polymers of the type [Cd(L)(dca)]n(X)n (1 and 2) [L = N,N′-(bis-(pyridin-2-yl)benzylidene)diethylenetriamine; dca = dicyanamide; X =ClO4- (1), PF6- (2)] have been prepared and characterized on the basis of microanalytical, spectroscopic and other physicochemical properties. Structures of 1 and 2 are solved by single crystal X-ray diffraction measurements. Structural study reveals that in both compounds each cadmium(II) center adopts a distorted pentagonal bipyramidal geometry with a CdN7 chromophore coordinated by five N atoms of the pentadentate Schiff base and two nitrile N atoms of single bridged dca in μ1,5 fashion. The polynuclear units in 1 are engaged in weak N-H...O and C-H...O hydrogen bondings with perchlorate ions embedded among the chains to give a 2D sheet structure. In the long-range form, the 1D polymeric chains of 2 pack through N-H...F and C-H...F hydrogen bonds with hexafluorophosphate placed in between chains resulting a 2D continuum. The complexes display intraligand 1(π-π*) fluorescence in DMF solutions at room temperature.
