Correlation between Raman wavenumbers and P?O bond lengths in crystalline inorganic phosphates

Autor: D. de Waal, L. Popović, J. C. A. Boeyens

Publikováno v: Journal of Raman Spectroscopy. 36:2-11

A linear empirical correlation was established between Raman stretching wavenumbers of phosphorus–oxygen bonds and their bond lengths in inorganic crystalline phosphates. Although established on samples of inorganic crystalline phosphates, the corr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::25e2d3a136aad46189f43e4bc70d7974
https://doi.org/10.1002/jrs.1253

Static Disorder in Hexagonal Crystal Structures of C60 at 100 K and 20 K

Autor: D. Zobel, Peter Luger, M. Ramm, W. Duczek, J. C. A. Boeyens

Publikováno v: Crystal Research and Technology. 31:43-53

C60 · 2C8H10 (100 K): hexagonal space group P63, a = 23.694(4), c = 10.046(2) A, V = 4884(2) A3, Dx = 1.903 g cm−3, Z = 6, F(000) = 2856, γ(CuKa) = 1.54178 A, μ = 0.84 mm−1. C60 · 2C8H10 (20 K): hexagonal space group P63, a = 23.67(1), c = 10

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::432a8b480634eb91251cd68ea5c4b5a5
https://doi.org/10.1002/crat.2170310111

2,3-Diethyl-5,6,7,8-tetrahydro-2aλ4-thia-2,3,4a,8a-tetraazacyclopent[cd]azulene-1(2H),4(3H)-dithione

Autor: L. L. Lai, David H. Reid, David G. Billing, J. C. A. Boeyens

Publikováno v: Acta Crystallographica Section C Crystal Structure Communications. 51:2354-2356

The title compound, C 11 H 18 N 4 S 3 , contains elongated N-S bonds [1.877(1) and 1.903 (1) A] which are greater by 7.9 and 9.4%, respectively, than the two-centre two-electron N-S bond [1.74 A ; Allen, Kennard, Watson, Brammer, Orpen & Taylor (1987

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::07c74198e3c81205c0e63abc8e1443f0
https://doi.org/10.1107/s010827019500343x

Redetermination of the crystal structure of calcium sulphate dihydrate, CaSO4 · 2H2O

Autor: J. C. A. Boeyens, V. V. H. Ichharam

Publikováno v: Zeitschrift für Kristallographie-New Crystal Structures, Vol 217, Iss 1, Pp 9-10 (2002)
Zeitschrift für Kristallographie-New Crystal Structures, Vol 217, Iss JG, Pp 9-10 (2002)

CaH406S, monoclinic, C12/cl (No. 15), a = 6.284(1) Â, b = 15.200(1) Â,c = 6.523(1) λ,β = 127.41(1)°, V= 494.9 Â, Z = 4, Rp(F) = 0.028, wtfrefiF) = 0.079, T= 293 K. Source of material The crystallising solution was made up from commercial 0.5 M

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6fc56d38716053844ce51220f88a70b2
https://doaj.org/article/55d105a96c2c4810b2d1a8b3b8919f7e

5-Ethylamino-3-p-tolyl-1λ4,2,4-thiaselenazol-1-ylium Bromide: a New Heteroaromatic System

Autor: J. C. A. Boeyens, David H. Reid, David G. Billing, L. L. Lai

Publikováno v: Acta Crystallographica Section C Crystal Structure Communications. 52:1718-1719

In the title compound, C 11 H 13 N 2 SSe + .Br - , the Se-S bond length is 2.189 (2) A and the C(2) - Se and C(1) - S bond lengths are 1.890 (3) and 1.765 (3) A, respectively. The C(2)-Se-S and C(1)-S-Se bond angles are 89.36(10) and 93.36 (11)°, re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fed0bef4df38028697e825ed76844078
https://doi.org/10.1107/s0108270195017252