/usr/share/avogadro/fragments/alkenes/E-but-2-ene.cml is in avogadro-data 1.2.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | <?xml version="1.0" encoding="UTF-8"?>
<molecule xmlns="http://www.xml-cml.org/schema"
xmlns:cml="http://www.xml-cml.org/dict/cml"
xmlns:units="http://www.xml-cml.org/units/units"
xmlns:xsd="http://www.w3c.org/2001/XMLSchema"
xmlns:iupac="http://www.iupac.org"
id="CS_E-but-2-ene">
<formula concise=" C 4 H 8 "/>
<identifier convention="iupac:inchi" value="1/C4H8/c1-3-4-2/h3-4H,1-2H3/b4-3+"/>
<name convention="IUPAC">(E)-But-2-ene</name>
<atomArray>
<atom id="a1" elementType="C" x3="1.840132" y3="-0.455531" z3="-0.343419"/>
<atom id="a2" elementType="C" x3="0.538835" y3="0.247068" z3="-0.305846"/>
<atom id="a3" elementType="C" x3="-0.538777" y3="-0.246981" z3="0.306167"/>
<atom id="a4" elementType="C" x3="-1.840109" y3="0.455562" z3="0.343500"/>
<atom id="a5" elementType="H" x3="-0.501409" y3="-1.216914" z3="0.817807"/>
<atom id="a6" elementType="H" x3="1.822572" y3="-1.419452" z3="0.182469"/>
<atom id="a7" elementType="H" x3="2.623536" y3="0.160019" z3="0.119020"/>
<atom id="a8" elementType="H" x3="2.142653" y3="-0.649939" z3="-1.381256"/>
<atom id="a9" elementType="H" x3="0.501387" y3="1.216742" z3="-0.817938"/>
<atom id="a10" elementType="H" x3="-1.822594" y3="1.419102" z3="-0.183063"/>
<atom id="a11" elementType="H" x3="-2.142810" y3="0.650536" z3="1.381167"/>
<atom id="a12" elementType="H" x3="-2.623417" y3="-0.160212" z3="-0.118609"/>
</atomArray>
<bondArray>
<bond atomRefs2="a2 a1" order="1"/>
<bond atomRefs2="a1 a6" order="1"/>
<bond atomRefs2="a1 a7" order="1"/>
<bond atomRefs2="a1 a8" order="1"/>
<bond atomRefs2="a2 a3" order="2"/>
<bond atomRefs2="a2 a9" order="1"/>
<bond atomRefs2="a3 a4" order="1"/>
<bond atomRefs2="a3 a5" order="1"/>
<bond atomRefs2="a4 a10" order="1"/>
<bond atomRefs2="a4 a11" order="1"/>
<bond atomRefs2="a4 a12" order="1"/>
</bondArray>
<propertyList>
<property dictRef="cml:molwt" title="Molecular weight">
<scalar dataType="xsd:double" dictRef="cml:molwt" units="units:g">56.1063</scalar>
</property>
<property dictRef="cml:monoisotopicwt" title="Monoisotopic weight">
<scalar dataType="xsd:double" dictRef="cml:monoisotopicwt" units="units:g">56.0626003</scalar>
</property>
<property dictRef="cml:mp" title="Melting point">
<scalar dataType="xsd:double" errorValue="1.0" dictRef="cml:mp" units="units:celsius">-105</scalar>
</property>
<property dictRef="cml:bp" title="Boiling point">
<scalar dataType="xsd:double" errorValue="1.0" dictRef="cml:bp" units="units:celsius">1</scalar>
</property>
</propertyList>
</molecule>
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