錫矽酸鹽、錫鍺酸鹽之合成、結構鑑定與性質研究; Synthesis, Crystal structure and properties of Tin Silicates and Germanate

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/6243

Title:	錫矽酸鹽、錫鍺酸鹽之合成、結構鑑定與性質研究;Synthesis, Crystal structure and properties of Tin Silicates and Germanate
Authors:	廖真惠;Chen-Hui Liao
Contributors:	化學研究所
Keywords:	錫鍺酸鹽;錫矽酸鹽;Tin Germanate;Tin silicate
Date:	2006-07-04
Issue Date:	2009-09-22 10:16:15 (UTC+8)
Publisher:	國立中央大學圖書館
Abstract:	本論文主要是利用助熔劑長晶法合成兩個系列的化合物，第一系列是錫矽酸鹽化合物其中有包含鹽類 (salt-inclusion compound) [Na3F][SnSi3O9] (1) 與無機陽離子 Cs2SnSi6O15 (2)、Cs2SnSi3O9 (3) 這兩種類型的錫矽酸鹽化合物，第二系列是錫鍺酸鹽化合物 Na4Sn2Ge5O16 (4)。藉由 X 光單晶繞射法決定出結構與化學式，並利用固態核磁共振的方法探討特定原子核的周遭環境與 X 光單晶繞射法所得的結果相互佐證。化合物 1 是一個嶄新的結構，從過去的文獻中從未報導過金屬矽酸鹽同時包含 Na+ 離子與 F- 離子同時填充於孔洞中形成類似 anti-Al2Cl6 的結構，而化合物 2 、化合物 3 皆是三維的結構，矽酸鹽的部份分別形成二維的矽酸鹽骨架及一維直鏈狀的矽酸鹽，化合物 4 是一個新穎的錫鍺酸鹽化合物，鍺氧四面體是以共角的方式相互連接，形成 [Ge5O16] 的五重體鏈 (fivefold germanate tetrahedra)，以 SnO6 八面體連接這五重體鏈，形成具有兩種不同形式的六員環，而這兩種六員環又以相互交叉 (intersection tunnels) 的形式存在，並將此化合物與文獻中一些類似分子式的化合物做一系列的比較。 Four new Metal silicates and Metal germanates, [Na3F][SnSi3O9](1)、Cs2SnSi6O15(2)、Cs2SnSi3O9 (3)、Na4Sn2Ge5O16 (4) have been synthesized using a flux-growth method and characterized by single-crystal X-ray diffraction. The structure of 1 consists of 6-membered silicate rings linked via corner-sharing by SnIVO6 octahedra to form a 3-D framework that delimits two types of channels. The F atoms and Na atoms are located in the structural channels and form a dimer with the anti-Al2Cl6(g) structure. This stannosilicate adopts a new structure and is the first metal silicate that contains both Na+ and F- ions in the channels. The 19F and 29Si MAS NMR and 23Na MQMAS NMR spectra are consistent with the crystallographic results. Crystal data: [Na3F][SnSi3O9], monoclinic, space group C2/m (No. 12), a = 10.539(1) Å, b = 13.953(2) Å, c = 6.5171(7) Å, ? = 111.576(2)º, V = 891.2(3) Å3, and Z = 4. The structure of 2 can be expressed in terms of Si6O156- silicate sheets by isolated SnO6 octahedra. The structure of 3 consists of unbranched infinite chain, periodically repeating unit every six tetrahedral. These chains are linked by SnIVO6 octahedra. The structure of 4 is based on [Ge5O16] ( fivefold germanate tetrahedra) that are connected by SnIVO6 octahedra to form 3-D framework. The structure consists of two types of six-membered rings and forms the intersection tunnels.
Appears in Collections:	[Graduate Institute of Chemistry] Electronic Thesis & Dissertation

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