Mixed-halide MX chain solids: effect of chloride doping on the crystal structure and resonance Raman spectra of [Pt(en)2Br2][Pt(en)2](ClO4)4

1991 ◽  
Vol 3 (1) ◽  
pp. 123-127 ◽  
Author(s):  
Sara C. Huckett ◽  
Robert J. Donohoe ◽  
Laura A. Worl ◽  
Alain D. F. Bulou ◽  
Carol J. Burns ◽  
...  

Author(s):  
B. LATTE ◽  
A. KIENAST ◽  
C. BRUHN ◽  
A. LOIDL ◽  
H. HOMBORG

The lithium phthalocyaninate(1-) iodine inclusion complex [( Lipc −)· I ], prepared by the reaction of anhydrous lithium iodide with molten 1,2-dicyanobenzene, crystallizes tetragonally in the space group P4/mcc with a = 14.057(3) Å, b = 6.397(1) Å, V = 1264.0(4) Å3, Z = 2. Lithium is in a crystallographically imposed strictly square planar coordination geometry with a Li - N distance of 1.940(7) Å. Linear chains of equidistant iodine atoms are segregated from adjacent metal-over-metal stacks of the planar lithium phthalocyaninate(1-) molecules, which are staggered by 40.2(5)°. Resonance Raman spectra have been studied in comparison with those of the starch-iodine complex [(starch)·I]. The identity of the iodine chromophore in both complexes is essentially the same. It consists of an iodine chain in a hydrophobic environment. Its character is predominately ‘aliphatic’ in [(starch)·I] and ‘aromatic’ in [( Lipc −)· I ].







2008 ◽  
Author(s):  
X. K. Shen ◽  
H. Ling ◽  
Y. F. Lu






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