In:
Zeitschrift für Kristallographie - Crystalline Materials, Walter de Gruyter GmbH, Vol. 213, No. 9 ( 1998-9-1), p. 477-482
Abstract:
The molecular crystal structures of 3-amino-4-nitro-6-mefhyl-8-oxopyrazolo[1,5-a]pyrimidine (C 7 H 7 N 5 O 3 ; space group P 2 1 / n ; Z = 4; a = 18.920(4) Å, b = 8.441(2) Å, c = 5.210(1) Å, β = 90.82(2)°) and 3-amino-4-nitro-6,8-dimethylpyrazolo[1,5-a]pyrimidine (C 8 H 9 N 5 O 2 ; space group P [unk]; Z = 2; a = 7.643(2) Å, b = 9.142(3) Å, c = 7.492(1) Å, α = 111.12(2)°, β = 100.66(2)°, γ = 102.58(2)°) have been determined from X-ray and neutron powder diffraction data using grid search procedure. The hydrogen-bonded molecules of the former compound form chains directed along the diagonals of the bc plane, while the latter crystal structure adopts dimeric arrangement.
Type of Medium:
Online Resource
ISSN:
2194-4946
,
2196-7105
DOI:
10.1524/zkri.1998.213.9.477
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
1998
SSG:
13
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