The Crystal and Molecular Structure of 3,5-Diacetamido-1,2-dithiolium Bromide.

2-Ethoxycarbonylimino-2H-1,2,4-thiadiazolo[2,3-a]pyridine monohydrate

“…The intramolecular distance S..-O in these compounds varies from 2.41 to 2.96 A with only two exceptions; a value of 1.879 A was found in the oxygen analogue of a thiathiaphthene (Gilardi & Karle, 1971) and a 2.034 A distance was detected in (14) 172 (2) -434 (18) 63 H (6) 1156 (14) 119 (2) -197 (18) 63 H (7) 369 (11) 22 (2) 484 (18) 76 H(8) 496 (18) 28 (2) 791 (20) 7) [113.4 (6) °] and N(3)-C(7)-O(1) [126.1 (7) °] as was shown by Kapecki, Baldwin & Paul (1968). Nearly the same geometry of a five-membered ring closed by an S...O interaction was found in 3,5-diacetamido-l,2dithiolium bromide (Hordvik & Kjoge, 1966). II III IV V VI VII 3.0342x + 7.4530y + 3.4372z = 3"5951 3"0817x + 7.5648y + 3.4086z = 3"6521 3"091 Ix+ 7.6856y + 3.3999z = 3.6820 3"0982x + 7.7407y + 3-3945z = 3"6999 3.0757x + 7.599 ly + 3.4108z = 3"6594 3.0519x + 7-4797y + 3.4270z = 3.6311 2.9983x + 7.2355y + 3.4622z = 3.5933 Several least-squares planes ( Table 2) were calculated through the three fused-ring systems of CITP.HzO and through some atom groups to obtain detailed information of the molecular shape and conformational features.…”

Structure of 2-benzoylimino-3-methyl-1,3-thiazolidine: a comparison of intramolecular X–S...O = Y interactions

“…The relative ordering of the electron-attractive force of the O=Y-R' moieties is: O Leban (1976); (5) Gieren & Dederer (1978); (6) Sletten & Velsvik (1973); (7) Hordvik, Sletten & Sletten (1969); (8) Bardi, Piazzesi & Busetti (1979); (9) Hamilton & LaPlaca (1964); (10) Mellor & Nyburg (1971b); (11) Hordvik & Kjoge (1966); (12) Schmid et aL (1975); (13 Table 7. Symbols 4, 5 and 6 stand for four-, five-or six-membered B rings (Table 7), while 0 represents structures in which there is no ring B.…”