. Author manuscript; available in PMC: 2012 Dec 12.

Published in final edited form as: Organometallics. 2011 Dec 12;30(23):6482–6489. doi: 10.1021/om200908c

Table 2.

Photophysical properties of the metalla-rectangles.

Molecular-rectangle	Absorption maxima λmax(nm) (Molar extinction co-efficient 10⁵ ε M^-1 cm^-1)	λ_ex(nm)	Emission maxima λ_max(nm)
3ca	309 (1.09), 352(1.48), 446 (0.29), 639(0.08), 701 (0.08)	330	370, 390
3da	308 (0.86), 355 (1.19), 565 (0.14), 611 (0.18)	330	370, 443, 525, 560
3ab	303 (0.84), 323 (1.00), 337 (0.83)	298	335
3bb	316 (0.95), 358 (0.60), 494 (0.39)	298	335
3cb	323 (0.62), 353 (0.51), 437 (0.21), 643 (0.04), 701 (0.05)	330	370
3ac	312 (0.76)	298	339, 383
3bc	310 (1.25), 494 (0.41)	298	372
3cc	325 (0.61), 353 (0.50), 439 (0.21), 645 (0.05), 701 (0.04)	330	370
3ad	316 (0.48)	298	334, 352
3bd	304 (1.01), 492 (0.43)	298	357, 374
3cd	294 (0.56), 318 (0.49), 435 (0.20), 645 (0.05), 701 (0.05)	330	370