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  • databases - How can I get xyz coordinates of atoms of a unit cell . . .
    Go to Calculate → Packing Slicing… and under Packing area tick Pack option, and under Include Atoms area select … that Fit Now you have the content of the entire unit cell: Save the data as XYZ by clicking File → Save As… → Save as type: XMol files (* xyz) This produces a file with the coordinates of all atoms of the unit cell
  • Which biphenyl is optically active? - Chemistry Stack Exchange
    Biphenyl 2 is the only optically active compound here These stereoisomers are due to the hindered rotation about the 1,1'-single bond of the compound (Ref 1) Biphenyl 3 is not optically active, because partially allowed rotation about the 1,1'-single bond of the compound (rotation is only partially restricted) To illustrate this phenomenon, I depicted the following diagram: Note that
  • pH notation in text - Chemistry Stack Exchange
    When referring to units of pH in continuous text (i e not in a table), which is the recommended usage? pH 7 to pH 8 pH 7 to 8 What about when the term "pH" has already been mentioned in the text?
  • Joules to kJ mol conversion - Chemistry Stack Exchange
    In my AP Chem class we are working on testing Hess's Law and conducted three reactions Then enthalpy changes of the 1) $\\ce{NaOH + HCl}$ and 2) $\\ce{NaOH + NH4Cl}$ to predict the enthalpy change o
  • What are angular and radial nodes? - Chemistry Stack Exchange
    Nodes are the points in space around a nucleus where the probability of finding an electron is zero However, I heard that there are two kinds of nodes, radial nodes and angular nodes What are the
  • How to convert an XYZ file to Z-matrix? - Chemistry Stack Exchange
    The format you have posted is actually (simple) xmol This means the first line denotes the number of atoms, the second line denotes a comment, and both need to be skipped
  • Ice Crystal Matrix measurements of H2O molecules?
    I want a mathematically generated 3D STL copy of this image, however it's represent algorithmically If I do all the H2O's as individual pieces with female connections prepared for chopped bike sp
  • Why does nitrogen have a maximum covalency of 4?
    Recall that covalency is the number of shared electron pairs formed by an atom of that element Nitrogen's maximum covalency is indeed $4$ And no, it does not break up its lone pair I'll give you a simple example Have a look at the Lewis structure of the ammonium ion: (source) Notice that nitrogen's octet is complete as soon it bonds with three $\ce {H}$ atoms (aka forms ammonia) The
  • Trimethoprim solubility - Chemistry Stack Exchange
    I’m working on preparing a stock solution of Trimethoprim (TMP) for a downstream biological assay and encountering solubility issues I’d appreciate any guidance from folks who’ve done this before
  • inorganic chemistry - What is difference between T1g and T2g . . .
    I know that the “$\\mathrm{g}$” stands for symmetry of octahedral shape, but how are labels “1” and “2” given in $\\mathrm{A_{1g}}$ and $\\mathrm{A_{2g}}$ representations too… Is it related to group





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