55948-44-2Relevant academic research and scientific papers
Germanium phthalocyanine, GePc, and the reduced complexes SiPc(pyridine)2 and GePc(pyridine)2 containing antiaromatic π-electron circuits
Cissell, Julie A.,Vaid, Thomas P.,DiPasquale, Antonio G.,Rheingold, Arnold L.
, p. 7713 - 7715 (2007)
The reaction of GeCl2(dioxane) with K2Pc(DMF) 4 yields germanium phthalocyanine, GePc. GePc dissolves in pyridine to form GePc(py)2. The 1H NMR spectrum of GePc(py) 2 and nucleus-independent chemical shift (NICS) calculations on GePc(NMe3)2 both show the presence of a strong paratropic ring current. That ring current, along with the bond-length alternation in the crystal structure of GePc(tBuPy)2, indicates the presence of an antiaromatic π-electron circuit in GePc(py)2. SiPc(py) 2 was synthesized, and its electronic structure is similar to that of GePc(py)2.
