Consitution and colour.

[1] GRAEBE, 1870, ANN CHEM, V154, P307

[2] 1906, BER DTSCH CHEM GES, V39, P3437

[3] 1904, BER DTSCH CHEM GES, V37, P2848

[4] 1902, ANN CHEM, V322, P40

[5] 1908, BER DTSCH CHEM GES, V41, P1458

[6] 1908, BER DTSCH CHEM GES, V41, P1461

[7] 1902, BER DTSCH CHEM GES, V35, P343

[8] 1876, BER DTSCH CHEM GES, V9, P522

[9] 1890, CHEM ZTG, P14

[10] 1905, BER DTSCH CHEM GES, V38, P3777

[1] GRAEBE, 1870, ANN CHEM, V154, P307

[2] 1906, BER DTSCH CHEM GES, V39, P3437

[3] 1904, BER DTSCH CHEM GES, V37, P2848

[4] 1902, ANN CHEM, V322, P40

[5] 1908, BER DTSCH CHEM GES, V41, P1458

[6] 1908, BER DTSCH CHEM GES, V41, P1461

[7] 1902, BER DTSCH CHEM GES, V35, P343

[8] 1876, BER DTSCH CHEM GES, V9, P522

[9] 1890, CHEM ZTG, P14

[10] 1905, BER DTSCH CHEM GES, V38, P3777