Activation of an aliphatic carbon-hydrogen bond at room temperature. Conversion on a cluster of a stable .sigma.-bonded alkyl group to a .mu.2-alkylidene ligand. Synthesis and crystal structure determination of HOs3(6-CH2C5H3N-2-C(H):N-iso-Pr)(CO)9 and H2Os3(6-CHC5H3N-2-C(H):N-iso-Pr)(CO)8

1988 ◽  
Vol 7 (7) ◽  
pp. 1565-1572 ◽  
Author(s):  
Robert. Zoet ◽  
Gerard. Van Koten ◽  
Kees. Vrieze ◽  
Jacob. Jansen ◽  
Kees. Goubitz ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Structure Determination ◽  
Alkyl Group ◽  
Room Temperature ◽  
Crystal Structure Determination ◽  
Synthesis And Crystal Structure ◽  
Aliphatic Carbon ◽  
Ligand Synthesis

First crystal-structure determination of natural lansfordite, MgCO3·5H2O

2017 ◽  
Vol 81 (5) ◽  
pp. 1063-1071 ◽  
Author(s):  
Fabrizio Nestola ◽  
Anatoly V. Kasatkin ◽  
Sergey S. Potapov ◽  
Olga YA. Chervyatsova ◽  
Arianna Lanza
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Single Crystal ◽  
Structure Determination ◽  
Room Temperature ◽  
Crystal Structure Determination ◽  
Hydrogen Atoms ◽  
Synthetic Analogues ◽  
X Ray

AbstractThis study presents the first crystal-structure determination of natural MgCO3·5H2O, mineral lansfordite, in comparison with previous structural works performed on synthetic analogues. A new prototype single-crystal X-ray diffractometer allowed us to measure an extremely small crystal (i.e. 0.020 mm × 0.010 mm × 0.005 mm) and refine anisotropically all non-hydrogen atoms in the structure and provide a robust hydrogen-bond arrangement. Our new data confirm that natural lansfordite can be stable for several months at room temperature, in contrast with previous works, which reported that such a mineral could be stable only below 10°C.

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