Multiple numbers

The mixture was characterized as follows infrared (liquid film) cm. 1745 strong (shoulder at 1720), 1640 medium strong, 1440 medium strong proton magnetic resonance (chloroform-d) B (multiplicity, number of protons) 3.75 (singlet, 6), 4.12 (singlet, 2), 6.21 and 6.30 (two singlets, 1). 

Proton magnetic resonance (chloroform-d) S (multiplicity, number of protons, assignment) 3.30 (singlet, 12, OC/fg), 6.10 (singlet, 4, ring protons.)... 

Because of the number of chemicals and subsequent multiple number of potential reactions, it is impractical and (perhaps impossible) to list all potential reactions. Several systems exist for determining the reactions between classes of chemicals, however, none of them is definitive. Because all of the potential reactions for individual chemicals are not cataloged and because there are no (or very few), pure solutions of waste materials, laboratory compatibility testing is recommended for most materials. An appropriate protocol for compatibility testing would involve the following steps ... 

For = 1 and = tj, Equation 13-78 becomes Equation 13-67. Assume that the jackets have equal areas, therefore, for any multiple number of jacket zones. 

The spectral properties of the product are as follows infrared (neat) cm.-1 3268, 1377, 1037 proton magnetic resonance (carbon tetrachloride) d, multiplicity, number of protons 0.88 (multiplet, 6), 1.38 (multiplet, 7), 3.33 (unresolved doublet, 2), 5.14 (broad singlet, 1). 

The product has the following spectral properties infrared (KBr) cm.-1 3103 and 3006 (aromatic C—H), 2955, 2925, and 2830 (aliphatic C—H stretching), 1257 and 1032 (aromatic methyl ether), 841 and 812 (C—H out-of-plane bending of isoxazole C4—H and 4-substituted phenyl) proton magnetic resonance (trifluoroaeetic acid) 5, multiplicity, number of protons, assignment 3.98 (singlet,... 

The pure adduct had the following proton magnetic resonance spectrum (chloroform-d) <5, multiplicity, number of protons, assignment 6.75 (singlet, 2, cyclohexene vinyl protons), 6.20 (multiplet, 2, cyclobutene vinyl protons), 3.5 (broad multiplet, 4, cyolobutane protons). 

The checkers found that a fraction, b.p. 45-71° (18 mm.), had the following spectral properties infrared (carbon tetrachloride) no absorption in the 3300-1600 cm.-1 region attributable to OH, C=0, or C=C vibrations proton magnetic resonance (chloroform-d) <5, multiplicity, number of protons, assignment 3.1-4.2 (multiplet, 4, CH—Cl, CH—O, and C//2—O), 1.0-2.5 (multiplet, 7, GH3 and 2 x C//2)-Thin layer chromatographic analysis of this fraction on silica gel plates using chloroform as eluent indicated the presence of a major component (the cis- and fraus-isomers), Rf = 0.60, and a minor unidentified component, Rf = 0.14. 

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