ISSN:
1572-8854
Schlagwort(e):
Sulfur dioxide
;
dimethylamine
;
dative bond
;
gas-solid structure difference
;
donor — acceptor adduct
;
nitrogen — sulfur bond
;
Lewis acid-base complex
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Geologie und Paläontologie
,
Physik
Notizen:
Abstract The crystal structure of the donor — acceptor adduct (CH3)2HN−SO2 is reported. Crystals of the compound are clear prisms, space group Pna21; at −96°C,a=9.894(1),b=6.051(2),c=16.478(3) Å,D=1.469 g/cm3,V=786.6(5) Å,Z=8. The unit cell contains two crystallographically independent adducts, with N−S bond lengths of 2.015(3) Å and 1.991(3) Å. The average value, 2.00(1) Å is 0.33(4) Å shorter than the 2.34(3) Å value previously determined from microwave spectroscopy of the gas phase species, revealing a large medium effect on the length of the donor — acceptor bond. The structural results are compared with published data for the trimethylamine — SO2 adduct, and discussed in terms of existing experimental and theoretical results for other donor — acceptor systems.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01668411
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