The rare organic mineral dinite was found during the last century at Castelnuovo Garfagnana, Tuscany, Italy. After a chemical study, which indicated an erroneous chemical formula C18H16, it was stored in the Mineralogical Museum of the University of Pisa, where it was recently relocated. A new chemical analysis was carried out on dinite, and NMR, IR and mass spectra are presented here. The new data allows a re-definition of dinite as a distinct mineralogical species, with chemical formula C20H36. Single crystal X-ray diffraction work showed dinite to be orthorhombic, space group P2(1)2(1)2(1), with a = 12.356, b = 12.762, c = 11.427 angstrom. Its crystal structure has been refined up to R = 0.068. Dinite is an alicyclic saturated hydrocarbon with three condensed cycles in the formula unit.
Re-discovery and re-definition of dinite, C20H36, a forgotten organic mineral from Garfagnana, northern Tuscany, Italy
PASERO, MARCO;PERCHIAZZI, NATALE
1991-01-01
Abstract
The rare organic mineral dinite was found during the last century at Castelnuovo Garfagnana, Tuscany, Italy. After a chemical study, which indicated an erroneous chemical formula C18H16, it was stored in the Mineralogical Museum of the University of Pisa, where it was recently relocated. A new chemical analysis was carried out on dinite, and NMR, IR and mass spectra are presented here. The new data allows a re-definition of dinite as a distinct mineralogical species, with chemical formula C20H36. Single crystal X-ray diffraction work showed dinite to be orthorhombic, space group P2(1)2(1)2(1), with a = 12.356, b = 12.762, c = 11.427 angstrom. Its crystal structure has been refined up to R = 0.068. Dinite is an alicyclic saturated hydrocarbon with three condensed cycles in the formula unit.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
