Tetraethylgermane

Base Information

• Chemical Name: Tetraethylgermane
• CAS No.: 597-63-7
• Molecular Formula: C8H20 Ge
• Molecular Weight: 188.837
• European Community (EC) Number: 209-905-7
• NSC Number: 65800
• DSSTox Substance ID: DTXSID9060499
• Nikkaji Number: J43.395K
• Wikipedia: Tetraethylgermanium
• Wikidata: Q2277172
• Mol file: 597-63-7.mol

Synonyms:Tetraethylgermane;597-63-7;Tetraethylgermanium;Germane, tetraethyl-;Tetraethyl germane;GERMANIUM, TETRAETHYL-;EINECS 209-905-7;NSC 65800;BRN 3660242;C8H20Ge;tetraethyl-germanium;NSC65800;MFCD00015096;(C2H5)4Ge;C8-H20-Ge;DTXSID9060499;QQXSEZVCKAEYQJ-UHFFFAOYSA-;NSC-65800;WLN: 2-GE-2&2&2;AKOS015838469;LS-71220;FT-0693993;T1157;D92457;Q2277172

Chemical Property of Tetraethylgermane

Chemical Property:

• Appearance/Colour: clear colorless liquid
• Vapor Pressure: 2.53mmHg at 25°C
• Melting Point: -90 °C
• Refractive Index: n20/D 1.442(lit.)
• Boiling Point: 163-164 °C(lit.)
• Flash Point: 44.2°C
• PSA: 0.00000
• Density: g/cm³
• LogP: 3.51480
• Storage Temp.: Flammables area
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 4
• Exact Mass: 190.0776784
• Heavy Atom Count: 9
• Complexity: 47.5

Purity/Quality:

98% ^*data from raw suppliers

Tetraethylgermane ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xn
• Hazard Codes: Xn
• Statements: 10-22-36/37/38
• Safety Statements: 16-26-36

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: CC[Ge](CC)(CC)CC
• Description: Tetraethylgermanium is a kind of organic germanium compounds. Germanium shares the group 14 with silicon, tin and lead in the periodic table. Though having limited synthetic value due to the cost of organic germanium compounds, germanium is considered as a non-toxic alternative of many toxic organotin reagents. Compounds such as d tetraethylgermanium are used as precursors for germanium dioxide chemical vapor deposition in the microelectronics industry, being useful in the manufacturing of semiconductor films.

Technology Process of Tetraethylgermane

There total 24 articles about Tetraethylgermane which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 95.0%

ethyl bromide (74-96-4) + triethylgermyl ytterbium bromide*2THF → YbBr2*2(C4H8O) (113173-30-1) + tetraethylgermane (597-63-7)

Guidance literature:

In tetrahydrofuran; addn. of soln. of C2H5Br in THF to soln. of Yb complex in THF at 20°C; YbBr2*2THF as ppt., detection of (C2H5)4Ge by gas-liquid chromatography as volatile product;

DOI:10.1007/BF00955849

Reference yield: 83.0%

tris(1,2-benzenediolato-O,O′)germanate (112712-64-8) + ethylmagnesium bromide (925-90-6) → tetraethylgermane (597-63-7)

Guidance literature:

In diethyl ether; (N2); added dropwise a soln. of C2H5MgBr to a suspn. of Ge-compound at room temp.; stirred for 30 min; hydrolyzed; extracted with ether; washed with water; dried over MgSO4; evapd.;

DOI:10.1021/om00051a049

Reference yield: 80.0%

Coppinger's Radikal (22719-43-3,2370-18-5) + ethylmagnesium bromide (925-90-6) + germanium hydride trichloride (1184-65-2) → tetraethylgermane (597-63-7) + hexaethyldigermane (993-62-4) + octaethyltrigermane (13937-05-8)

Guidance literature:

With water; In tetrahydrofuran; treatment od reaction mixt. in THF with excess EtMgBr, hydrolysis; extn. (ether), drying over Na2SO4; identification of individual compds.;

upstream raw materials:

ethylmagnesium bromide

diethylzinc

triethylaluminum

ethyl bromide

Downstream raw materials:

methane

ethane

ethene

germanium

Refernces

• 1、 Dennis, L. M.,Hance, F. E.. "". . p. 370 - 377. Retrieved 1925.
• 2、 -. "Process for the preparation of group IVA and group VIA compounds". Page 10. . Retrieved 2008/06/13.
• 3、 Cerveau,Chuit,Corriu,Reyé. "Reactivity of dianionic hexacoordinate germanium complexes toward organometallic reagents. A new route to organogermanes". . p. 1510 - 1515. Retrieved 2008/10/08.