Two new crystalline organogermanate-based inorganic-organic hybrid compounds

摘要

The bifunctional metalloligand bis(carboxyethylgermanium)sesquioxide, (HOOCCH_2CH_2Ge)_2O_3, was employed in the systematic high-throughput (HT) investigation of the system Zn ~(2+)/(HOOCCH_2CH_2Ge)_2O _3/H_2O/C_4H_9OH. Two new metal-organogermanates Zn[(OOCCH_2CH_2Ge)_2O _3] (1) and Zn_2(O_3GeCH_2CH _2COO) (2) were discovered that show two new structural motifs for this class of compounds. Whereas in compound 1 a formal intercalation in the structure of (HOOCCH_2CH_2Ge)_2O_3 is observed, 2 exhibits a new layered structure composed of CGeO_3 and ZnO_4 unit linked by μ_3-oxygen atoms. Both connectivity modes lead to dense three-dimensional framework structures.