Germanium Compounds Containing Ge═E Double Bonds (E = S, Se, Te) as Single-Source Precursors for Germanium Chalcogenide Materials.
New germanium chalcogenide precursors, S═Ge(dmamp)2(3), S═Ge(dmampS)2(4), Se═Ge(dmamp)2(5), Se═Ge(dmampS)2(6), Te═Ge(dmamp)2(7), and Te═Ge(dmampS)2(8), were synthesized from Ge(dmamp)2(1) and Ge(dmampS)2(2) using sulfur, selenium, and tellurium powders (dmamp = 1-dimethylamino-2-methyl-2-propanolate, dmampS = 1-dimethylamino-2-methylpropane-2-thiolate). Complexes 1 and 2 were synthesized from metathesis reactions of GeCl2·dioxane with 2 equiv of aminoalkoxide or aminothiolate ligands. Thermogravimetric analysis of complex 1 displayed good thermal stability and volatility. The molecular structures of complexes 2-8 from X-ray single crystallography showed distorted trigonal bipyramidal geometry at the germanium centers. Germanium chalcogenide materials (GeSe and GeTe) were obtained from the thermal decomposition of complexes 5, 6, and 8 in hexadecane. X-ray diffraction patterns exhibited that GeSe and GeTe had orthorhombic and rhombohedral phases, respectively. This study affords a facile method to easily prepare germanium chalcogenide materials using well-designed and stable complexes by thermal decomposition of single-source precursors in solution.
Thin Film Materials Research Center, Korea Research Institute of Chemical Technology , 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea.
Hyo-Suk
HS
Kim
Thin Film Materials Research Center, Korea Research Institute of Chemical Technology , 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea.
Eun Ae
EA
Jung
Thin Film Materials Research Center, Korea Research Institute of Chemical Technology , 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea.
Seong Ho
SH
Han
Thin Film Materials Research Center, Korea Research Institute of Chemical Technology , 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea.
Jeong Hwan
JH
Han
Thin Film Materials Research Center, Korea Research Institute of Chemical Technology , 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea.
Bo Keun
BK
Park
Thin Film Materials Research Center, Korea Research Institute of Chemical Technology , 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea.
Chang Gyoun
CG
Kim
Thin Film Materials Research Center, Korea Research Institute of Chemical Technology , 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea.
Taek-Mo
http://orcid.org/0000-0002-5169-2671
TM
Chung