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Über die Gestalt von BO3-Gruppen
The frequency distributions of some important geometrical quantities of 75 B03-groups with estimated standard deviations of d(B—O) of0.005 Â or less are presented and discussed. The following meanExpand
Geometrische Größen und einfache Modellrechnungen für BO4-Gruppen
Most B04-groups deviate significantly from a regulär tetrahedron with symmetry 4 3 m T h e geometry of these deviations and the extent of the distortions are the main topics of this study. TheExpand
Homometrische kubische Punktkonfigurationen
With the aid of an extension of Buerger's concept of complementary point sets it is possible to derive point configurations which are homometric, i.e., have the same self-image and diffractionExpand
Kristallstruktur und Phasenumwandlung von Betain-Borat, (CH3)3NCH2COO·B(OH)3
SummaryBetaine borate undergoes a phase transition of strongly second order at 142.5 K. Crystals below this temperature belong to the ferroelastic Aizu species mmmF2/m. The crystal structures of bothExpand
Über Kugellagerungen, Wirkungsbereichsteilungen und Koordinationszahlen von Punktkonfigurationen mit trigonaler Symmetrie R3̅m
Sphere configurations and partitions of three-dimensional space into Dirichlet domains have been studied for the point configurations of the trigonal lattice complex R3m 6(c). In total, 11Expand
Homometrische Punktmengen in Ebenengruppen
An extension of Buerger's concept of complementary point sets has been used to determine homometric pairs of point sets of the plane groups. A procedure is outlined to derive tautoeikonic pairsExpand
Die Kristallstruktur der isotypen Verbindungen KAg(NO3)2, NH4Ag(NO3)2 und RbAg(NO3)2
KAg(NO3)2 crystallizes in space group P21/a-C2h5,a=13.953,b=4.955,c=8.220 Å, β=97.76°,Z=4. X-ray intensities were collected with a two-circle diffractometer. The structure was solved by means ofExpand
Kristallstruktur und Phasenumwandlung von Betain-Borat, (CH 3 ) 3 NCH 2 C
Crystal Structure and Phase Transition of Betaine-Borate, (CH3)3NCH2COO • B(OH)3 Summary. Betaine borate undergoes a phase transition of strongly second order at 142.5 K. Crystals below thisExpand
Homometrische Punktmengen in Ebenengruppen
An extension of Buerger's concept of complementary point sets has been used to determine homometric pairs of point sets of the plane groups. A procedure is outlined to derive tautoeikonic pairsExpand
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