Tris­(quinolin-8-olato)­gallium(III)

The title compound (GaQ₃), [Ga(C₉H₆NO)₃], is the Ga analog of the most widely used organic light-emitting diode (OLED) material, AlQ₃. Its molecular structure is a six-coordinated gallium compound, with the angles around the Ga³⁺ ion indicating approximate octahedral geometry. There is intermolecular π–π stacking of the ligands (8-hydroxy­quinolines) in a multidirectional fashion.

Key indicators

• Single-crystal X-ray study
• T = 293 K
• Mean [sigma](C-C) = 0.006 Å
• R factor = 0.050
• wR factor = 0.117
• Data-to-parameter ratio = 14.7

checkCIF/PLATON results

No syntax errors found



Alert level C
ABSTM02_ALERT_3_C  The ratio of expected to reported Tmax/Tmin(RR') is < 0.90
            Tmin and Tmax reported:      0.557     0.768
            Tmin' and Tmax expected:      0.648     0.768
            RR' =      0.858
            Please check that your absorption correction is appropriate.
RINTA01_ALERT_3_C  The value of Rint is greater than 0.10
            Rint given   0.144
PLAT020_ALERT_3_C The value of Rint is greater than 0.10 .........       0.14
PLAT061_ALERT_3_C Tmax/Tmin Range Test RR' too Large .............       0.84
PLAT710_ALERT_4_C Delete 1-2-3 or 2-3-4 Linear Torsion Angle ... #         19
            N3  -GA1 -N1  -C9    146.70  0.90   1.555   1.555   1.555   1.555
PLAT710_ALERT_4_C Delete 1-2-3 or 2-3-4 Linear Torsion Angle ... #         24
            N3  -GA1 -N1  -C1    -36.30  1.10   1.555   1.555   1.555   1.555
PLAT710_ALERT_4_C Delete 1-2-3 or 2-3-4 Linear Torsion Angle ... #         39
            N1  -GA1 -N3  -C27   108.50  1.00   1.555   1.555   1.555   1.555
PLAT710_ALERT_4_C Delete 1-2-3 or 2-3-4 Linear Torsion Angle ... #         44
            N1  -GA1 -N3  -C19   -71.20  1.00   1.555   1.555   1.555   1.555

   0 ALERT level A = In general: serious problem
   0 ALERT level B = Potentially serious problem
   8 ALERT level C = Check and explain
   0 ALERT level G = General alerts; check

   0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   0 ALERT type 2 Indicator that the structure model may be wrong or deficient
   4 ALERT type 3 Indicator that the structure quality may be low
   4 ALERT type 4 Improvement, methodology, query or suggestion

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