Hydrogen bifurcated

Thus, in a recent survey of 1509 N-H- 0=C hydrogen bonds in organic carbonyls or carb-oxylates, nearly 80% (1199) were unbrancbed, some 20% (304) were bifurcated, but only 0.4% (6) were trifurcated. Some examples are in Fig. 3.5. 

Liquid water is a sample of 36 water molecules in one of a nearly infinite number of possible ordered arrangements. Identify at least ten hydrogen bonds between pairs of water molecules. Would you characterize most of them as linear or as bifurcated ... 

In certain cases. X-ray crystallography has shown that a single H—A can form simultaneous hydrogen bonds with two B atoms bifurcated or three-center hydrogen bonds). An example is an adduct (1) formed from pentane-2,4-dione (in its... 

Coll, M., C. A. Erederick, A. H. J. Wang, and A. Rich. A bifurcated hydrogen-bonded conformation in the D(A-T) base-pairs of the DNA dodecamer D(CGCAAATTTGCG) and its complex with distamycin. Proc. Natl. Acad. Sci. USA 1987, 84, 8385-8389. 

Procedures enabling the calculation of bifurcation and limit points for systems of nonlinear equations have been discussed, for example, by Keller (13) Heinemann et al. (14-15) and Chan (16). In particular, in the work of Heineman et al., a version of Keller s pseudo-arclength continuation method was used to calculate the multiple steady-states of a model one-step, nonadiabatic, premixed laminar flame (Heinemann et al., (14)) a premixed, nonadiabatic, hydrogen-air system (Heinemann et al., (15)). 

The complexes formed by H5 bound to 01 were found to be slightly less stable than the new with H5 bound to 02, for both the guanidinium and the pyrolidinium complex. Both type of complexes feature bifurcated hydrogen bonds, with 02 bound to H5 and H6. The double binding is achieved with some cost to the linearity of the hydrogen bond. The most stable complexes have been found to be planar. 

Here, the theophylline molecules form hydrogen-bonded networks composed of one N-H N hydrogen bond and two bifurcated C-H O hydrogen bonds. 

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