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Small-diameter (<5 nm), single-crystalline SnO₂ nanorods were synthesized in solution with a mean length of 17 ± 4 nm (mean aspect ratio of 4:1) with the [001] direction along the major axis. Two characteristic peaks at 576 and 356 cm^-1 in the Raman spectrum further confirmed the small crystal size. The SnO₂ nanorods exhibit a red emission at 580 nm.