pyritohedral

(redirected from Tetrahedral symmetry)
Also found in: Encyclopedia, Wikipedia.

pyritohedral

(ˌpaɪrɪtəʊˈhiːdrəl)
adj
(Minerals) of or relating to a pyritohedron
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
found that empty [C.sub.28] fullerene behaves as a hollow tetravalent superatom with tetrahedral symmetry [28].
The magnetic moment (3.06 B.M for [Ni(NO 3 ) 2 (C 14 H 14 N 4 O 2 )] and 3.09 B.M for [NiI 2 (C 14 H 14 N 4 O 2 )]) and non-electrolytic behavior of these complexes are consistent with distorted tetrahedral symmetry of [Ni(ABH)X 2 ].
Two excited levels E and T are valid for pure tetrahedral symmetry. A strong low-symmetry field of ligands (arranged as a distorted and very tight tetrahedral environment) causes an additional splitting of these levels.
The electronic spectra of Co(II) complex No.1 recorded in solution show bands at 11320 [cm.sup.-1] and 13332 [cm.sup.-1] due to [sup.4][A.sub.2](F) [right arrow] [sup.4][T.sub.1](P) ([[??].sub.3]) transition in tetrahedral symmetry while ([[??].sub.1]), ([[??].sub.2]) was not observed due to instrumental limit [15].
Contrariwise, most solution oxo-molybdenum species present during the impregnation with SoMo salt were monomeric (Mo[O.sub.4.sup.-2]) species in tetrahedral symmetry. In this case, the change in pH values became smaller than those originated upon AHM impregnation (see Table 1).