Oxidative addition of an alcohol to the alkylgermanium(II) compound Ge[CH(SiMe3)2]2; molecular structure of Ge[CH(SiMe3)2]2(H)OEt

Synthesis of metallasiloxanes of group 13–15 and their application in catalysis

“…17 Furthermore, the oxidative addition of an alcohol to an alkylgermanium(II) compound is also known. 18 The formation of 4 resembles that of 1. However, CH 4 is eliminated instead of HNEt 2 .…”

Synthetic Studies and Structural Aspects of Some Metallacyclic Compounds of Germanium(IV) Incorporating Nitrogen, Oxygen and Sulfur: 1. Reactions of Germanium(IV) isopropoxide with diols and crystal structure of a diolato bridged germanium(IV) compound [Ge2(O2C2H4)4]

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Of the alkoxy-and glycoxy derivatives of tetravalent elements (group14 as well as 4) which have been extensively studied 1-2 from spectroscopic as well as structural points of view, those of germanium have received much less attention. Although penta [3][4][5][6] and hexa 7-10 coordinated derivatives of even germanium with complex organic moieties have been reported, the alkoxy derivatives generally prefer a tetracoordinated structure [11][12][13][14] even with alkoxyalkanols as shown in a recent publication. 14 In this paper, a crystallographically characterised pentacoordinate diolate bridged derivative, [Ge 2 (O 2 C 2 H 4 ) 4 ], is being reported for the first time as part of a detailed physicochemical study of the diolate derivatives of germanium(IV).

Results and discussionReactions of Ge(OPr i ) 4 with a variety of glycols in 1:1 and 1:2 molar ratios in anhydrous benzene yield the compounds (OPr i ) 2 Ge(O-G-O) (1, 3, 5, 7, 9) or Ge(O-G-O) 2 (2, 4, 6, 8, 10), respectively.

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The First Crystal Structure of a Germanium(II) Amide with a Germanium - Lithium Bond and Its Behavior Towards Oxygen and Water

“…(1)]. The 1 H, 13 C, 29 Si, and 7 Li NMR spectra of 3 in solution showed only one singlet each for the dimethylsilyl groups, for the methyl groups of the tert-butyl group, and for the lithium atom. This indicates that in solution 3 should have, at least on a time-average, C 3v symmetry.…”

“…This indicates that in solution 3 should have, at least on a time-average, C 3v symmetry. The 1 H and 13 C NMR spectra also contain signals for coordinated THF molecules.…”

“…The 1 H, 13 C, and 29 Si NMR spectra of 4 also contain only one singlet each for the dimethylsilyl groups and the methyl groups of the tert-butyl group. Therefore, it is assumed that there are C 3v -symmetric molecules in solution as well.…”