Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Journal of Chemical Physics called Measurements of structural and quadrupole coupling parameters for bromoferrocene using microwave spectroscopy, Author is Drouin, Brian J.; Lavaty, T. Greg; Cassak, Paul A.; Kukolich, Stephen G., which mentions a compound: 1273-73-0, SMILESS is Br[C-]12[Fe+2]3456789([C-]%10C6=C7C8=C9%10)C1=C3C4=C25, Molecular C10BrFe, Product Details of 1273-73-0.
Rotational spectra for two isotopomers of bromoferrocene were measured using pulsed-beam Fourier transform microwave spectroscopy. Transitions were observed for the 79Br and 81Br isotopomers in the 5-9 GHz range. Rotational constants and the quadrupole coupling tensors were obtained. The rotational constants and quadrupole coupling parameters for 79Br are A = 1272.110(1), B = 516.1125(2), C = 441.3775(2), eQqaa=267.16(3), eQqab=-409.81(4), and eQqbb=21.49(4), and those for 81Br are A = 1271.045(4), B = 510.0079(2), C = 436.7687(2), eQqaa=225.40(6), eQqab=-341.62(4), and eQqbb=15.65(4). The measured rotational constants were used to determine the following structural parameters of bromoferrocene: r(Fe-(C5H5))=1.63(2), r(Fe-(C5H4Br))=1.67(3), r(C-Br)=1.875(11), and r(C-C)=1.433(1) A. The values of the quadrupole coupling parameters in the principal quadrupole axis systems and the C-Br bond axis systems are compared with similarly derived parameters for chloroferrocene, chlorobenzene, and bromobenzene. Previous data for chloroferrocene was reanalyzed to obtain refined quadrupole parameters.
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Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com