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dujuan247

铜虫 (小有名气)

[求助] 求助三水碳酸镁晶体和氢氧化镁晶体(可以带结晶水)的结构式;

万分着急,请好心人指点!

[ Last edited by ghcacj on 2011-9-27 at 09:31 ]
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dujuan247

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引用回帖:
2楼: Originally posted by taochn at 2011-09-27 09:36:44:
There is also a trihydrate, MgCO3.3H2O (rhombic; r.d. 1.85), which occurs naturally as nesquehonite


Mg(OH)2 : brucite

[eimg]12/72/287346_1317087 ...

三水碳酸镁的这个结果不太对,它的空间群为P21/n(14),晶胞参数如下:a=12.112 b=5.365 c=7.697 应该是链状结构。能不能帮忙重新模拟一下??十分感激!
4楼2011-09-27 10:19:55
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taochn

铁杆木虫 (著名写手)

【答案】应助回帖

dujuan247(金币+20): 谢谢 2011-09-27 09:53:36
dujuan247(金币+10): 2011-12-27 16:28:29
引用回帖:
1楼: Originally posted by dujuan247 at 2011-09-27 09:05:12:
万分着急,请好心人指点!
[ Last edited by ghcacj on 2011-9-27 at 09:31 ]

There is also a trihydrate, MgCO3.3H2O (rhombic; r.d. 1.85), which occurs naturally as nesquehonite


Mg(OH)2 : brucite

2楼2011-09-27 09:36:44
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dujuan247

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引用回帖:
2楼: Originally posted by taochn at 2011-09-27 09:36:44:
There is also a trihydrate, MgCO3.3H2O (rhombic; r.d. 1.85), which occurs naturally as nesquehonite


Mg(OH)2 : brucite

[eimg]12/72/287346_1317087 ...

万分感谢 能不能模拟一个二水合氢氧化镁的结构式?
3楼2011-09-27 09:53:19
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taochn

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★ ★ ★ ★ ★
ghcacj(金币+5): 谢谢 2011-09-28 09:41:12
Nesquehonite Crystallography
Axial Ratios:  a:b:c =2.2263:1:1.4248  
Cell Dimensions:  a = 12, b = 5.39, c = 7.68, Z = 4; beta = 90.45° V = 496.73 Den(Calc)= 1.85  
Crystal System:  Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/n  
X Ray Diffraction:  By Intensity(I/Io): 6.5(1), 3.86(0.9), 2.61(0.7),
5楼2011-09-27 10:55:16
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