Phosphorus-31 nuclear magnetic resonance parameters for compounds with the α-tetraphosphorus trisulphide skeleton; substituent constants for an inorganic substrate
作者:Bruce W. Tattershall
DOI:10.1039/dt9870001515
日期:——
Phosphorus-31 n.m.r. spectra have been measured and assigned for symmetric compounds α-P4S3XY (1) with X = Y = Cl, Br, CN, or NCS, and for unsymmetric compounds (1) with X = CN, Y = Cl, Br, or I; X = N3, Y = Cl; and X = Br, Y = I. Simple relationships between couplings in unsymmetric compounds and those in the corresponding symmetric compounds were found. Chemical shifts in the symmetric compounds
磷-31核磁共振谱进行了测量,并且指定用于对称化合物α-P 4小号3 XY(1)其中X = Y =氯,溴,CN,或NCS,和用于不对称化合物(1),其中X = CN,Y = Cl,Br或I;X = N 3,Y = Cl; X = Br,Y =I。发现了不对称化合物与相应对称化合物中的偶联之间的简单关系。通过与不对称化合物中明确分配的化学位移进行比较,确定了对称化合物中的化学位移。对称化合物的所有四个偶联常数都通过涉及取代基常数的两参数线性关系很好地拟合,而基于有机反应的取代基常数,该常数与它们基本不同。