Sandbh is an acronym for Ski and Board Hire, a sign I saw when I was wondering what alias to use. I had intended to use "Sabh" so that I could also claim it stood for South Australian Brewery Holdings but at the time I was under the impression that this name (Sabh) was already in use.
I am member of WikiProject Elements.
- 1 Impossible chemistry
- 2 On the bench in my workshop
- 3 On the bookshelf
- 4 References
- Ferrocene, 1951. "The preparation of ferrocene overturned the common understanding that bonds between metals and carbon were weak and markedly reactive, and therefore unstable" (Kotz et al. 2010, p. 1052).
- Noble gas compounds, 1962. The inertness of the nobles gases "was preached so dogmatically wherever chemistry was taught that few chemists would spend their time trying to produce 'impossible' compounds" (Chernick 1963, p. 444). Their refusal to enter into chemical combination with other elements represented "a cornerstone of chemical theory" (Bent 2006, p. 116).
- Cubane, 1964. "…thought to be too difficult to synthesize" (Moore, Stanitski & Jurs 2004, p. 397).
- Perbromic acid, 1968. "The quest for perbromic acid and perbromates and the various reasons adduced for their apparent non-existence make fascinating and salutary reading" (Greenwood & Earnshaw 1998, p. 871). A nice summary of these reasons can be found in Herrell & Gayer (1972).
- Hypofluorous acid, 1971. The first definite claim for the formation of HOF was put forward in 1932 (Dennis & Rochow 1932; 1933) but it was not conclusively isolated until 1971 (Studier & Appelman 1971). In between, "chemists had pretty well convinced themselves that no oxy acids of fluorine were ever likely to be isolated. This conclusion was based on straightforward thermodynamic arguments…" (Appelman 1973, p. 116).
- Arsenic pentachloride, 1976. The non-existence of AsCl5 was or has variously been attributed to: the higher relative electron density of As when compared to P or Sb (Sanderson 1960, pp. 26–33; 261); the reluctance of the d orbitals of As to participate in bonding (Chatt 1974, p. 13); the supposition that the reaction AsCl5 → AsCl3 + Cl2 must be thermodynamically unfavourable in all circumstances (Smith 1990, p. 25); and the reluctance of the 4s2electron pair to participate in bonding (Cotton 2003). Konrad Seppelt synthesized AsCl5 in 1976 by irradiating a mixture of AsCl3 and liquid Cl2 with UV light at –105 ºC. It decomposes at temperatures above –50 ºC.
- Fluorine, chemical preparation of, 1986. "The chemical synthesis of elemental fluorine has been pursued for at least 173 years by many notable chemists, including Davey, Fremy, Moissan and Ruff. All their attempts have failed, and the only known practical synthesis of F2 is Moissan’s electro-chemical process, which was discovered exactly 100 years ago" (Christe 1986, p. 3271). "…essentially every textbook stated that F2 cannot be prepared by chemical means because it is the most electronegative element." (Christe Research Group n.d.) "Fluorine is the most reactive chemical element, and because of this it is difficult to isolate it from the compounds in which it naturally occurs. It is impossible to do so by chemical means…" (Carey 2006, p. 294). A purely chemical preparation of diatomic fluorine was achieved in 1986 by Karl Christe. (Greenwood & Earnshaw 1998, p. 821; Knight 2000)
On the bench in my workshop
¶ = currently active, else under a dust cover
- Add boron buckyballs
Articles for (or letters to) journals
- Classifying the elements using a five factor scheme
Axis of instability
- Odd behaviour that appears to occur in going down the group 7 elements: Mn (radical crystalline structure), Tc (radioactive), and Re ("most radioactive" of the naturally occurring elements which have stable isotopes?); and their f-block analogues: Pm (radioactive) and Np (first of the transuranium elements). Just as there are magic numbers of protons and neutrons, I presume there are also antimagic numbers of protons (and neutrons?) that are less stable or inherently unstable. I have no idea if any of this is related to the very complex structure of Mn, which is also adopted by white P, or if it is just a coincidence. The numbers involved are 15 (P) and 25 (Mn); and 43 (Tc); 61 (Pm); 75 (Re) and 93 (Np).
- Cutting the rough diamond…¶
- Spring clean
- When discovered and by whom
Periodic table of originally named elements
- Use names and symbols of the elements, as suggested by the first person/team who claimed to have discovered the applicable element e.g. Be = Gl Glucinium
- Add missing references
- Respond to Axiosaurus at talk
- Respond to Double sharp at my talk re Tl and Pb electronegativity
- Respond to Double sharp at my talk re pesky Cn
- Respond to Double sharp at my talk re magnetic ordering of some TM ions
- Trim text
- Vectorize the PT extract
- Work with User:YBG to refine this article…¶
- Respond to Double sharp at WT:ELEM re their summary of arguments for Sc/Y/La/Ac and /Lu/Lr
On the bookshelf
- Appelman EH 1973, ‘Nonexistent compounds: Two case histories’, Accounts of Chemical Research, vol. 6, no. 4, April, pp. 113–117
- Bent H 2006, New ideas in chemistry from fresh energy for the periodic law, AuthorHouse, Bloomington
- Carey WC 2006, American Scientists, Infobase, New York
- Chatt GA 1974, 'The organic and hydride chemistry of transition metals', in FG Stone & R West (eds), Advances in organometallic chemistry, vol. 12, Academic Press, New York, pp. 1–30
- Chernick CL 1963, 'The ignoble gases: a chemical somersault', New Scientist, vol. 19, 29 August, pp. 444–46
- Christe KO 1986, 'Chemical synthesis of elemental fluorine', Inorganic Chemistry, vol. 25, no. 21, Oct, pp. 3721–3722
- Christe Research Group n.d., 'Chemical synthesis of elemental fluorine', viewed 15 Mar 2015
- Cotton S 2003, 'Arsenic Pentachloride - AsCl5 (and some other AX5 molecules)’, The Molecule of the Month, January
- Dennis LM & Rochow EG 1932, 'Communications to the editor', Journal of the American Chemical Society, vol. 54, p. 832
- —— 1933, 'Oxyacids of Fluorine. II', Journal of the American Chemical Society, vol. 55, p. 2431–2434
- Greenwood NN & Earnshaw A 1998, Chemistry of the elements, 2nd ed., Butterworth Heinemann, Oxford
- Herrell AY & Gayer KH 1972, 'The elusive perbromates', Journal of Chemical Education, vol. 49, no. 9, pp. 583–586
- Knight J 2000, 'Handle with care!', New Scientist, 6 May, p. 40
- Kotz JC, Treichel PM, Weaver GC & Townsend JR 2010, Chemistry & chemical reactivity, Brooks/Cole, Belmont
- Moore JW, Stanitski CL & Jurs PC 2004, Chemistry: The molecular science, 2nd ed., Brooks Cole, Belmont CA
- Rochow EG 1986, 'Choices', Journal of Chemical Education, vol. 63, no. 5, May, pp. 400–405
- Sanderson RT 1960, Chemical periodicity, Reinhold, New York
- Smith DW 1990, Inorganic substances: A prelude to the study of descriptive inorganic chemistry, Cambridge University Press, Cambridge
- Studier MH & Appelman EH 1971, 'Hypofluorous acid', Journal of the American Chemical Society, vol. 93, pp. 2349–2351