Synthesis, Structure, and Cyclocondensation of the 4,4,4-Trifluoro-3,3-dihydroxy-2-methyl-1-(thien-2-yl)-1-butanone with Hydroxylamine and Hydrazine

Table 2

Hydrogen-bonding geometry for 3 (Å and °).

D-H…A	d(D-H) (Å)	d(H…A) (Å)	d(D…A) (Å)	<(DHA) (°)
O1-H1O1…O3	0.943(1)	1.847(2)	2.679(2)	145.61(9)
O2-H2O2…O1	0.945(1)	1.987(1)	2.919(2)	168.17(9)

Symmetry code 1/2 − x, 1/2 + y, 1/2 − z.