Acta Cryst. (2004). E60, m1237-m1239  [ doi:10.1107/S160053680401921X ]

[Cu₄^ICu^II(CN)₆(DMF)₄]_n (DMF is N,N'-dimethylformamide): redetermination and topological analysis of a mixed-valence copper-cyanide coordination polymer with a unique six-connected self-penetrating network

X.-J. Zhao, S. R. Batten and M. Du

Online 13 August 2004

Key indicators

• Single-crystal X-ray study
• T = 293 K
• Mean (N-C) = 0.008 Å
• R factor = 0.048
• wR factor = 0.092
• Data-to-parameter ratio = 17.1

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT062_ALERT_4_C Rescale T(min) & T(max) by .....................       0.94       
PLAT220_ALERT_2_C Large Non-Solvent    C     Ueq(max)/Ueq(min) ...       2.97 Ratio 
PLAT241_ALERT_2_C Check High   U(eq) as Compared to Neighbors  for         O1     
PLAT242_ALERT_2_C Check Low    U(eq) as Compared to Neighbors  for         N4     
PLAT242_ALERT_2_C Check Low    U(eq) as Compared to Neighbors  for         N5     
PLAT320_ALERT_2_C Check Hybridisation of  C1     in Main Residue .          ?     
PLAT764_ALERT_4_C Overcomplete CIF Bond List Detected (Rep/Expd) .       1.16 Ratio 

Alert level G
ABSTM02_ALERT_3_G  When printed, the submitted absorption T values will be
            replaced by the scaled T values. Since the ratio of scaled T's
            is identical to the ratio of reported T values, the scaling
            does not imply a change to the absorption corrections used in
            the study.
            Ratio of Tmax expected/reported      0.940
            Tmax scaled      0.558 Tmin scaled      0.366

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

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

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