Trichloro- and methyldichlorogermyl monochelates and dibromo- and dichlorogermyl bischelates derived from N,N-disubstituted amides of 2-hydroxycarboxylic acids

New Heteroleptic Germanium Precursors for GeO2Thin Films by Atomic Layer Deposition

“…The bond lengths of germanium and two oxygens were the same as 1.927(3) Å, respectively, and the length with chlorine was 2.275(13) Å (shown in Table ). The Ge–Cl in complex 1 has a longer distance than those of reported tetravalent complexes such as Cl 3 Ge­[OCHMeC­(O)­NR 1 ], Cl 2 MeGe­[OCHR 2 C­(O)­NMe], Ge­(EthdH_1) 2 Cl 2 , and Cl 2 Ge­[OCH 2 C­(O)­NR 3 ] (R 1 = Me 2 , (CH 2 ) 4 , (CH 2 ) 5 ; R 2 = (CH 2 ) 5 , Me, H; R 3 =(CH 2 CH 2 ) 2 O, (CH 2 ) 5 ) with 2.139(5)–2.270(6) Å, but is within the range of bond length. ,− Ge­(II)–Cl bond lengths are longer than the Ge­(IV) bond lengths because the Ge­(II) ion is slightly larger than the Ge­(IV) ion. To investigate the solid-state structures of the newly designed complexes, we applied an mba ligand with good packing ability by a phenyl group.…”