X-ray powder diffraction data for the second and third polymorphs of 1-methylhydantoin

被引：0

作者：

Delgado, Gerzon E. ^{[1
,2
]}

Chacon, Cecilia ^{[3
]}

Marroquin, Gustavo ^{[4
]}

Cisterna, Jonathan ^{[5
]}

Brito, Ivan ^{[2
]}

机构：

[1] Univ Los Andes, Fac Ciencias, Dept Quim, Lab Cristalog, Merida 5101, Venezuela

[2] Univ Antofagasta, Fac Ciencias Basicas, Dept Quim, Campus Coloso, Antofagasta 240000, Chile

[3] Ctr Tecnol Explorac & Prod, Conacyt, Inst Mexicano Petr, Boca Del Rio 94286, Veracruz, Mexico

[4] Inst Mexicano Petr, Ciudad De Mexico 07730, Mexico

[5] Univ Catolica Norte, Fac Ciencias, Dept Quim, Antofagasta, Chile

来源：

POWDER DIFFRACTION | 2022年 / 37卷 / 02期

关键词：

1-methylhydantoin; polymorphism; X-ray powder diffraction; SPECTROSCOPIC CHARACTERIZATION; DFT CALCULATIONS; RELIABILITY; REFINEMENT; CRITERION; CHEMISTRY;

D O I：

10.1017/S0885715622000136

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

X-ray powder diffraction data for the two new polymorphs of 1-methylhydantoin, C4H6N2O2, are reported. The polymorph II (MH-II) crystallizes in the orthorhombic system with space group Pna2(1) [a = 19.0323(7) angstrom, b = 3.91269(8) angstrom, c = 6.8311(7) angstrom, Z ' = 1, Z = 4, unit cell volume V = 508.70(3) angstrom(3). Polymorph III (MH-III) crystallizes in the orthorhombic system with space group P2(1)2(1)2(1) [a = a = 7.82427(5), b = 9.8230(5), c = 20.2951(4), Z ' = 3, Z = 12, unit cell volume V = 1563.5(1) angstrom(3)]. All measured lines, in each case, were indexed and are consistent with the space group.

引用

页码：108 / 114

页数：7

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