Acta Cryst. (2004). E60, o43-o44  [ doi:10.1107/S1600536803027405 ]

1,2-Bis(di-4-pyridylphosphino)ethane (d4pype)

S. J. Berners-Price, R. J. Bowen and P. C. Healy

Online 12 December 2003

Key indicators

• Single-crystal X-ray study
• T = 295 K
• Mean (C-C) = 0.006 Å
• R factor = 0.052
• wR factor = 0.182
• Data-to-parameter ratio = 18.1

checkCIF/PLATON results

No syntax errors found




Alert level C
PLAT094_ALERT_2_C Ratio of Maximum / Minimum Residual Density ....       3.10       
PLAT242_ALERT_2_C Check Low    U(eq) as Compared to Neighbors ....         C6     
PLAT340_ALERT_3_C Low Bond Precision on C-C bonds (x 1000) Ang ...          6       

   0 ALERT level A = In general: serious problem
   0 ALERT level B = Potentially serious problem
   3 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
   2 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
   0 ALERT type 4 Improvement, methodology, query or suggestion

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