- 作者: 姜宏哲 ; 楊國珠 ; 翁春和
- 作者服務機構: 台灣師範大學化學系
- 中文摘要: Bis-citrato (1a-d), bis-citramalato (2) and bis- malato (3) germanate(IV) complexes were synthesized from germanium dioxide and citric acid, citramalic acid and malic acid respectively and were identified with IR, NMR and elementary analysis. Crystal (1a) is triclinic, space group P.1bar. with a=7.919(2), b=7.968(3), c=9.605(3).ANG.,.alpha.=94.25(3), .beta.=108.03(2), .gamma.=113.05(3).degree., Z=1, and the final residue, R(F), is 0.033 for 2583 reflections. Crystal (2) is monoclinic, space group C2 with a=10.226(4), b=12.802(4), c=6.141(1).ANG.,.beta.=100.75(2).degree., Z=2, and the final residue, R(F), is 0.034 for 934 reflections. Both (1a) and (2) have slightly distorted octahedral structures with citrate or citramalate ions as a tridentate ligand that forms five-, six- and seven-membered rings with the central metal. There is a two-fold axis through the central atom of compound (2) instead of the inversion center of (1a). Same structures for these six complexes are indicated because the spectral patterns of the other four compounds, (1b-d) and (3), are similar to those of compounds (1a) and (2).
- 英文摘要: --
- 中文關鍵字: Germanate Complex; Synthesis; Crystal Structure; Citric Acid; Malic Acid; Citramalic Acid
- 英文關鍵字: 鍺酸錯合物;合成;晶體結構;檸檬酸;蘋果酸