... weak C—H···Ointeractions. The range of H···O distances (Table 2) found in (I) agrees with those found for weak C—H···O bonds (Desiraju & Steiner, ...1) ...
... OÐH O and weak CÐH O hydrogen bonds makes them useful in crystal design for the preparation of molecular materials with controlled physical properties (Desiraju, 1995; Desiraju & Steiner, ...OÐH ...
... HBPPY cations and the hydrogen maleate anions are connected through CÐH Ointeractions, forming close- packed zigzag layers in the bc plane (Table 2 and Fig. 2). Both the methylene H8A and H8B atoms are ...
... interactions link cations and anions along the c axis, forming then layers perpendicular to the a axis, as shown in Fig. 2. These layers are linked along the a axis through other weaker ...
... A solution of picric acid (0.12 g, 0.52 mmol) in methanol was added dropwise to a solution of benzoylmethylenetriphenylphosphorane, BPPY (0.20 g, 0.52 mmol), in methanol under ice-cold conditions. The mixture was stirred ...
... weak C—H···Ointeractions. The range of H···O distances (Table 2) agrees with that found for weak C—H···O bonds (Desiraju & Steiner, ...intramolecular ...
... weak C—H···Ointeractions. The range for the H···O distances (Table 2) found in (I) agree with those found for weak C—H···O bonds (Desiraju & Steiner, ...
... C—HOinteractions are observed involving aromatic and methoxy H atoms with ketonic carbonyl O atoms, as well as C—Hinteractions between aromatic H ...
... weak C—H···Ointeractions. The range for the H···O distances (Table 2) agrees with that found for weak C—H···O bonds (Desiraju & Steiner, ...C13—H13···O2 ...
... As a point of difference from (II), in the molecular struc- ture, a weak intramolecular C9—H9B O1 hydrogen bond (Table 2) results in the formation of a five-membered ring, which is fused with the cyclobutane ring (Fig. ...
... essentially coplanar, with a mean deviation of 0.023 A ˚ . In the crystal, centrosymmetrically related molecules are weakly connected into dimers by pairs of C—HOinteractions. The dimers are ...
... weak C—H···Ointeractions. The range for the H···O distances (Table 2) agree with those found for weak C—H···O bonds (Desiraju & Steiner, ...C4—H4···O3 ...
... by O—HO hydrogen bonds and weak C—HO ...N—HO inter- actions are observed and together they link the molecules into chains forming a two-dimensional network along ...
... S O bond lengths (Table 1) are comparable to those found in related structures (Vembu, Nallu, Garrison & Youngs, 2003a,b,c,d,e,f; Vembu, Nallu, Spencer & Howard, 2003a,b,c,d,e,f,g; Vembu, ...
... parameters in (I) resemble those of the isomorphous nitrate salt (Pbca with Z = 8; Baby Mariyatra et al., 2002), but differ from the parent ylide (Kalyanasundari et al., 1994). The crystal structure can be best described ...
... acrosome reaction (Spungin et al., 1992), development of immunoaffinity chromatography for the purification of human coagulation factor (Tharakan et al., 1992), chemical studies on viruses (Alford et al., 1991), ...
... CÐH Ointeractions (Table 2). The HO distances found in (I) agree with those found for weak CÐH O bonds (Desiraju & Steiner, ...O3 interactions each generate an S(5) ...