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Volumn 122, Issue 38, 2000, Pages 9227-9236

The melting point alternation in α,ω-alkanedicarboxylic acids

Author keywords

[No Author keywords available]

Indexed keywords

ALKANE DERIVATIVE; CARBENE; CARBON; CARBOXYLIC ACID DERIVATIVE; CARBROMAL;

EID: 0041112482     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja0011459     Document Type: Article
Times cited : (259)

References (82)
  • 2
    • 0039706897 scopus 로고
    • Substantial information on melting and boiling points, solubilities, refractive indices and sublimation enthalpies can be found in: Breusch, F. L. Fortschr. Chem. Forsch. 1969, 12, 119.
    • (1969) Fortschr. Chem. Forsch. , vol.12 , pp. 119
    • Breusch, F.L.1
  • 3
    • 0343602468 scopus 로고    scopus 로고
    • note
    • Diacids are well-known after their common names viz. oxalic (C2), malonic (C3), succinic (C4), glutaric (C5), adipic (C6), pimelic (C7), suberic (C8), azelaic (C9), and sebacic (C10). For ease of notation we refer to any diacid by the total number of carbon atoms it contains. Thus, for example, C6-diacid refers to adipic acid.
  • 18
  • 23
    • 0343602464 scopus 로고    scopus 로고
    • note
    • Whereas MacGillavray and co-workers reckon only point (c), Robertson and co-workers consider all the three points, however, with more emphasis on points (a) and (b).
  • 60
    • 0342732499 scopus 로고
    • Ph.D. Thesis, University of Innsbruck, Austria
    • Henck, J.-O. Ph.D. Thesis, University of Innsbruck, Austria, 1995, pp 61-81.
    • (1995) , pp. 61-81
    • Henck, J.-O.1
  • 62
    • 0034724405 scopus 로고    scopus 로고
    • and references therein
    • (o) A paper on the experimental charge density studies of C3- to C7-diacids has been published while the present paper is being reviewed. See: Gopalan, R. S.; Kumaradhas, P.; Kulkarni, G. U.; Rao, C. N. R. J. Mol. Struct. 2000, 521, 97 and references therein.
    • (2000) J. Mol. Struct. , vol.521 , pp. 97
    • Gopalan, R.S.1    Kumaradhas, P.2    Kulkarni, G.U.3    Rao, C.N.R.4
  • 63
    • 0343167056 scopus 로고    scopus 로고
    • note
    • 1/ c, Z = 4). Dupré la Tour (ref 5) showed that in odd diacids stable to melastable phase transition takes place before melting.
  • 67
    • 0343167057 scopus 로고    scopus 로고
    • note
    • These data are also useful for those who are dealing with solid-state properties at variable temperatures. For example, van der Waals radii of many atoms have been found to vary with temperature: Kirchner, M. T.; Boese, R., unpublished results.
  • 72
    • 0343602457 scopus 로고    scopus 로고
    • note
    • This is also conformed by the accurate H-atom positions obtained from the neutron diffraction data from the C8-diacid made at three different temperatures (ref 121).
  • 73
    • 0342297115 scopus 로고    scopus 로고
    • note
    • The closest C⋯O distances at 130 K in Å units are as follows: C4 (3.277), C5 (3.274), C6 (3.159), β-C7 (3.194), C8 (3.116), β-C9 (3.169), and C10 (3.086).
  • 74
    • 0343166629 scopus 로고    scopus 로고
    • note
    • The density trend is similar for the data at 298 K too; see Supporting Information.
  • 78
    • 0343166630 scopus 로고    scopus 로고
    • note
    • Twisting of carboxy groups also seem to result in somewhat longer hydrogen bonding separations in the odd members. The O⋯O distances for even and odd diacids are given in Table 4. It may be noted that the differences are at the second decimal place, and the difference in their contribution to the overall packing energy, although detectable, is very little.
  • 79
    • 0343167054 scopus 로고    scopus 로고
    • note
    • The packing coefficients follow a trend similar to that of densities, that is, they are inversely correlated with the melting points. See Tables 2 and 3 and also Supporting Information for a graphical display.
  • 80
    • 0342732498 scopus 로고    scopus 로고
    • note
    • Many other possibilities could be imagined with various degrees of inclination of adjacent dimers, but only those possibilities are realized which confer stability to the overall packing. Further polymorphs suggested in a recent study (ref 12m) could well belong to one of these possibilities.
  • 81
    • 0019109486 scopus 로고
    • Cotterill, R. M. J. (J. Cryst. Growth 1980, 48, 582) eloquently expresses the following in his article entitled "The Physics of Melting": "It is interesting to note that of all the physical phenomena known to man, some of the most common have proved to be the most difficult to understand. Melting is a case in point. The ultimate transition from the crystalline state to the liquid state, at a sufficiently high temperature, remains a mystery."
    • (1980) J. Cryst. Growth , vol.48 , pp. 582
    • Cotterill, R.M.J.1
  • 82
    • 16144362582 scopus 로고    scopus 로고
    • Our work is largely confined to providing an answer to the alternating melting point riddle well-known in n-alkanes and their derivatives. However, the even-odd carbon atom disparity is much more general (see: Sarma, J. A. R. P.; Nangia, A.; Desiraju. G. R.; Zass, E.; Dunitz, J. D. Nature 1996, 384, 320).
    • (1996) Nature , vol.384 , pp. 320
    • Sarma, J.A.R.P.1    Nangia, A.2    Desiraju, G.R.3    Zass, E.4    Dunitz, J.D.5


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.