14129-04-5Relevant academic research and scientific papers
Crystal Structures of trans-[NiBr2(pyridine)4] and [Ni(HNPEt3)4]I2
Groeb, Thorsten,Neumueller, Bernhard,Harms, Klaus,Schmock, Fritjof,Greiner, Andreas,Dehnicke, Kurt
, (2008/10/08)
Turquoise single crystals of trans-[NiBr2(pyridine)4] have been obtainedby the reaction of excess pyridine with nickel(II) bromide/diacetonealc ohol. According to the crystal structure determination the nickel atom is octahedrally coordinated by the two bromine atoms in trans position and by the nitrogen atoms of the pyridine molecules. Space group Pna21, Z=4, lattice dimensions at 20°C: a=1592.9(2), b=943.8(1), c=1413.0(2) pm, R1=0.0492. Dark blue single crystals of the phosphoraneimine complex [Ni(HNPEt3)4]I2 have been obtained from NiI2/H2O with excess Me3SiNPEt3 and subsequent recrystallization from acetonitrile. According to thecrystal structure determination the nickel atom is tetrahedrally coordi nated by the nitrogen atoms of the HNPEt3 molecules. The iodide ions areconnected via N-H...I contacts with the cation to form an ion triple. S pace group P21/c, Z=4, lattice dimensions at -80°C: a=1934.9(2), b=1078.3(1), c=1966.3(2) pm, β=111.040(8)°; R1=0.043.
