Diamondoid hydrocarbons

Diamondoids Hydrocarbons with cage-like molecular structures that resemble the crystal structure... 

Marchand, A. P. 2003. Diamondoid hydrocarbons delving into nature s bounty. Science 299 52-53. 

By analogy with adamantane, direct, ionic substitution reactions may be expected to be equally as effective for the synthesis of derivatives of other diamondoid hydrocarbons (e.g. diamantane and triamantane). In these cases, however, a larger number of isomers are possible. Diamantane has one methylene and two nonequivalent bridgehead positions while triamantane has four of each. 

Chen J., Eu J., Sheng G., Liu D., and Zhang J. (1996) Diamondoid hydrocarbon ratios novel maturity indices for highly mature crude oils. Org. Geochem. 25(3/4), 179-190. 

Hydrocarbons with typical overmature compositions and isomer distributions are characteristically found in rocks with deep-burial history, e.g., in Archean sequences (Brocks et al., 2003a). Adamantanes and diamantanes, for example, are diagnostic classes of diamondoid hydrocarbons that persist and become concentrated at extreme levels of thermal maturity (Chen et al., 1996 ... 

Fig. 4.30 Diamondoid hydrocarbons adamantane and diamantane (n.b. chair conformation of rings variation in line thickness to emphasize three-dimensional structure).

Grice K., Alexander R., Kagi R.I. (2000) Diamondoid hydrocarbon ratios as indicators of biodegradation in Australian crude oils. Org. Geochem. 31, 67—73. 

Both graphite and diamond in practice are not infinite, but finite nets and therefore have dangling bonds at the peripheries of single crystals normally, these bonds have hydrogen atoms attached to them. Consequently one may consider graphite to be an "honorary polycyclic peri-condensed benzenoid hydrocarbon", and diamond to be an "honorary adamantanoid or diamondoid hydrocarbon"... 

A.T. Balaban, "Enumeration of Catafusenes, Diamondoid Hydrocarbons, and Staggered Alkane C-Rotamers, MATCH (2) (1976), 51-61,... 

A. T. Balaban, Enumeration of catafusenes, diamondoid hydrocarbons, and staggered alkane C-rotamers, MATCH—Commun. Math. Comput. Chem. 2 (1976) 51-61. 

M. A. McKervey, Synthetic Approaches to Large Diamondoid Hydrocarbons , Tetrahedron, 1980, 36, 971. 

Mckervey, M.A. Synthetic approaches to large diamondoid hydrocarbons. Tetrahedron 1980, 36 971-992. 

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